Edexcel GCSE 9-1 CHEMISTRY/Combined Science QUIZ on TOPIC 2 "STATES of MATTER" (HT)

Which of the following statements best describes the arrangement of particles in a gas? [sm-1]
1. Close together and stationary
2. Close together and vibrating
3. Far apart and moving slowly
4. Very far apart and moving quickly
Which of the following statements best describes the arrangement of particles in a solid? [sm-2]
1. Close together and stationary
2. Close together and vibrating
3. Far apart and moving slowly
4. Very far apart and moving quickly
Which of the following statements best describes the arrangement of particles in a liquid? [sm-3]
1. Close together and stationary
2. Far apart and vibrating
3. Close together and moving freely
4. Very far apart and moving quickly
Which of the following best describes what happens to the particles of water when it freezes? [sm-4]
1. They gain energy and break up into atoms of hydrogen and oxygen,
2. They gain energy and gain freedom to move about
3. They lose energy and escape into the atmosphere
4. They lose energy and lose freedom to move about,
Which of the following best describes what happens to the particles of ice when it melts? [sm-5]
1. They gain energy and break up into atoms of hydrogen and oxygen,
2. They gain energy and gain freedom to move about
3. They lose energy and escape into the atmosphere
4. They lose energy and lose freedom to move about,
Which of the following best describes what happens to the particles of water when it boils? [sm-6]
1. They gain kinetic energy and increase their freedom to move without significant attraction
2. They gain energy and gain freedom to move about
3. They lose energy and escape into the atmosphere
4. They lose energy and lose freedom to move about,
Which of the following best describes what happens to the particles of water vapour when it condenses? [sm-7]
1. They gain kinetic energy and increase their freedom to move without significant attraction
2. They gain energy and gain freedom to move about
3. They lose energy and are closer and less free to move around
4. They lose energy and lose freedom to move about,
Which of the following best describes what happens to the particles of water when it evaporates? [sm-8]
1. The higher kinetic energy particles increase their freedom to move without significant attraction
2. They gain energy and gain freedom to move about
3. They lose energy and escape into the atmosphere
4. They lose energy and lose freedom to move about,
The table shows the melting points and boiling points of some substances. Which substance is a solid at 25^oC? [sm-9]

[Substance] Melting Point ^oC and Boiling Point ^oC
1. -39 and 354
2. 119 and 446
3. 15 and 126
4. -127 and -33
The table shows the melting points and boiling points of some substances. Which substance is a liquid at 0^oC? [sm-10]

[Substance] Melting Point ^oC and Boiling Point ^oC
1. -39 and 354
2. 119 and 446
3. 15 and 126
4. -127 and -33
The table shows the melting points and boiling points of some substances. Which substance is a gas at 0^oC? [sm-11]

[Substance] Melting Point ^oC and Boiling Point ^oC
1. -39 and 354
2. 119 and 446
3. 15 and 126
4. -127 and -33
The table shows the melting points and boiling points of some substances. Which substance is a liquid at 30^oC? [sm-12]

[Substance] Melting Point ^oC and Boiling Point ^oC
1. -39 and 10
2. 119 and 446
3. 15 and 126
4. -127 and -33
Air is confined in a glass bottle with a tight screw-top. When the bottle becomes warmer when heated with a hair-dryer, the pressure inside increases because the molecules of air? [sm-13]
1. become bigger
2. become smaller
3. move faster
4. move slower
Air is in a glass bottle with a tight screw-top. When the bottle becomes cooler when placed in a refrigerator, the pressure inside decreases because the molecules of air? [sm-14]
1. become bigger
2. become smaller
3. move faster
4. move slower
When the air in a room becomes warmer a hanging balloon blown up with air becomes bigger because the molecules of air? [sm-15]
1. become bigger
2. become smaller
3. move faster
4. move slower
When the air in a room becomes cooler a hanging balloon blown up with air becomes smaller because the molecules of air? [sm-16]
1. become bigger
2. become smaller
3. move faster
4. move slower
The table shows the melting points and boiling points of some substances. Which substance is a liquid at 20 ^oC? [sm-17]

[Substance] Melting Point ^oC and Boiling Point ^oC
1. -142 and -78
2. -95 and 4
3. -66 and 42
4. 90 and 189
The table shows the melting points and boiling points of some substances. Which substance is a solid at 20^oC? [sm-18]

[Substance] Melting Point ^oC and Boiling Point ^oC
1. -142 and -78
2. -95 and 4
3. -66 and 42
4. 90 and 189
The table shows the melting points and boiling points of some substances. Which substance is a gas at -60^oC? [sm-19]

[Substance] Melting Point ^oC and Boiling Point ^oC
1. -142 and -78
2. -95 and 4
3. -66 and 42
4. 90 and 189
The table shows the melting points and boiling points of some substances. Which substance is a liquid at -10^oC and a gas at 10^oC? [sm-20]

[Substance] Melting Point ^oC and Boiling Point ^oC
1. -142 and -78
2. -95 and 4
3. -66 and 42
4. 90 and 189
Which of the following graphs represents how the temperature of liquid varies as it becomes a solid? [sm-21]
1. graph 1
2. graph 2
3. graph 3
4. graph 4
Which of the following graphs represents how the temperature of gas varies as it becomes a liquid? [sm-22]
1. graph 1
2. graph 2
3. graph 3
4. graph 4
Which of the following graphs represents how the temperature of solid varies as it becomes a liquid? [sm-23]
1. graph 1
2. graph 2
3. graph 3
4. graph 4
Which of the following graphs represents how the temperature of liquid varies as it becomes a gas? [sm-24]
1. graph 1
2. graph 2
3. graph 3
4. graph 4
Which of the following graphs represents how the temperature of gas varies as it eventually becomes a solid? [sm-25]
1. graph 1
2. graph 2
3. graph 3
4. graph 4
Which of the following graphs represents how the temperature of solid varies as it eventually becomes a gas? [sm-26]
1. graph 1
2. graph 2
3. graph 3
4. graph 4
Which of the following is true as a gas is changing to a liquid in condensation? [sm-27]
1. increase in particle order
2. temperature rises
3. particles gain more freedom
4. energy change is endothermic
Which of the following is true as a gas is changing to a liquid in condensation? [sm-28]
1. decrease in particle order
2. temperature rises
3. particles lose freedom
4. energy change is endothermic
Which of the following is true as a gas is changing to a liquid in condensation? [sm-29]
1. decrease in particle order
2. temperature rises
3. particles gain freedom
4. energy change is exothermic
Which of the following is true as a liquid changes to a solid in freezing? [sm-30]
1. increase in particle order
2. temperature falls
3. particles gain freedom
4. energy change is endothermic
Which of the following is true as a liquid changes to a solid in freezing? [sm-31]
1. decrease in particle order
2. temperature stays constant
3. particles gain freedom
4. energy change is endothermic
Which of the following is true as a liquid changes to a solid in freezing? [sm-32]
1. decrease in particle order
2. temperature falls
3. particles lose freedom
4. energy change is endothermic
Which of the following is true as a liquid changes to a solid in freezing? [sm-33]
1. decrease in particle order
2. temperature falls
3. particles gain freedom
4. energy change is exothermic
Which of the following is true as a solid changes to a liquid in melting? [sm-34]
1. decrease in particle order
2. temperature rises
3. particles lose freedom
4. energy change is exothermic
Which of the following is true as a solid changes to a liquid in melting? [sm-35]
1. increase in particle order
2. temperature stays constant
3. particles lose freedom
4. energy change is exothermic
Which of the following is true as a solid changes to a liquid in melting? [sm-36]
1. increase in particle order
2. temperature rises
3. particles gain freedom
4. energy change is exothermic
Which of the following is true as a solid changes to a liquid in melting? [sm-37]
1. increase in particle order
2. temperature rises
3. particles lose freedom
4. energy change is endothermic
Which of the following is true as a liquid changes to a gas in boiling? [sm-38]
1. decrease in particle order
2. temperature rises
3. particles lose freedom
4. energy change is exothermic
Which of the following is true as a liquid changes to a gas in boiling? [sm-39]
1. increase in particle order
2. temperature stays constant
3. particles lose freedom
4. energy change is exothermic
Which of the following is true as a liquid changes to a gas in boiling? [sm-40]
1. increase in particle order
2. temperature rises
3. particles gain freedom
4. energy change is exothermic
Which of the following is true as a liquid changes to a gas in boiling? [sm-41]
1. increase in particle order
2. temperature rises
3. particles lose freedom
4. energy change is endothermic
Which of the following is true as a liquid changes to a gas in evaporation? [sm-42]
1. decrease in particle order
2. temperature stays constant
3. particles lose freedom
4. energy change is exothermic
Which of the following is true as a liquid changes to a gas in evaporation? [sm-43]
1. increase in particle order
2. temperature falls
3. particles lose freedom
4. energy change is exothermic
Which of the following is true as a liquid changes to a gas in evaporation? [sm-44]
1. increase in particle order
2. temperature stays constant
3. particles gain freedom
4. energy change is exothermic
Which of the following is true as a liquid changes to a gas in evaporation? [sm-45]
1. increase in particle order
2. temperature stays constant
3. particles lose freedom
4. energy change is endothermic
When water vapour in a cloud is gradually cooled, rainwater is formed. This change of state is called? [sm-46]
1. condensation
2. distillation
3. evaporation
4. saturation
Heat from the Sun changes water from liquid to a gas. This change of state is called? [sm-47]
1. condensation
2. distillation
3. evaporation
4. saturation
Gases diffuse because they? [sm-48]
1. are made of rapidly moving particles
2. have low boiling points
3. have a low density
4. easily move as convection currents
Liquids and dissolving solids diffuse because they? [sm-49]
1. are made of moving particles
2. have low boiling points
3. have a low density
4. easily move as convection currents
The table below shows the melting points and boiling points of substances A to D. Which substance is a gas at 25^oC? [sm-50]

[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt)
1. mpt = -127^o, bpt = -33 ^oC
2. mpt = -39^o, bpt = 354 ^oC
3. mpt = 63^o, bpt = 760 ^oC
4. mpt = 119^o, bpt = 446 ^oC
The table below shows the melting points and boiling points of substances A to D. Which substance is a liquid at 25^oC? [sm-51]

[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt)
1. mpt = -127^o, bpt = -33 ^oC
2. mpt = -39^o, bpt = 354 ^oC
3. mpt = 63^o, bpt = 760 ^oC
4. mpt = 119^o, bpt = 446 ^oC
The table below shows the melting points and boiling points of substances A to D. Which substance is a solid at 100^oC? [sm-52]

[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt)
1. mpt = -127^o, bpt = -33 ^oC
2. mpt = -39^o, bpt = 354 ^oC
3. mpt = 63^o, bpt = 760 ^oC
4. mpt = 119^o, bpt = 446 ^oC
The table below shows the melting points and boiling points of substances A to D. Which substance is a solid at 100^oC? [sm-53]

[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt)
1. mpt = -127^o, bpt = -33 ^oC
2. mpt = -39^o, bpt = 154 ^oC
3. mpt = 99^o, bpt = 140 ^oC
4. mpt = 101^o, bpt = 110 ^oC
The table below shows the melting points and boiling points of substances A to D. Which substance is suitable to use in a thermometer that measures in the range 10^oC to 90^oC? [sm-54]
[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt)
1. mpt = 0^o, bpt = 100 ^oC
2. mpt = -200^o, bpt = 40 ^oC
3. mpt = 20^o, bpt = 350 ^oC
4. mpt = -110^o, bpt = 80 ^oC
The table below shows the melting points and boiling points of substances A to D. Which substance is suitable to use in a thermometer that measures in the range -120^oC to 20^oC? [sm-55]
[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt)
1. mpt = 0^o, bpt = 100 ^oC
2. mpt = -200^o, bpt = 40 ^oC
3. mpt = -40^o, bpt = 350 ^oC
4. mpt = -110^o, bpt = 80 ^oC
The table below shows the melting points and boiling points of substances A to D. Which substance is suitable to use in a thermometer that measures in the range 0^oC to 100^oC? [sm-56]
[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt)
1. mpt = 0^o, bpt = 100 ^oC
2. mpt = -200^o, bpt = 40 ^oC
3. mpt = -40^o, bpt = 350 ^oC
4. mpt = -110^o, bpt = 80 ^oC
The table below shows the melting points and boiling points of substances A to D. Which substance is suitable to use in a thermometer that measures in the range -4^oC to 50^oC? [sm-57]
[Substance] Melting point ^oC(mpt), Boiling Point ^oC(bpt)
1. mpt = 0^o, bpt = 100 ^oC
2. mpt = -200^o, bpt = 40 ^oC
3. mpt = 40^o, bpt = 350 ^oC
4. mpt = -110^o, bpt = 80 ^oC
The rate of evaporation of a water does NOT depend on the? [sm-58]
1. humidity of the surrounding air
2. depth of the water
3. surface area of the water
4. temperature of the water
Which is true about the rate of evaporation of water? [sm-59]
1. it is speeded up on a humid day
2. it is due to the escape of the most energetic particles
3. heat is given out in the process
4. it is slowed down in a breeze
Which is true about the rate of evaporation of water? [sm-60]
1. it is speeded up on a dry day
2. it is due to the escape of the least energetic particles
3. heat is given out in the process
4. it is slowed down in a breeze
Which is true about the rate of evaporation of water? [sm-61]
1. it is speeded up on a humid day
2. it is due to the escape of the least energetic particles
3. heat is absorbed in the process
4. it is slowed down in a breeze
Which is true about the rate of evaporation of water? [sm-62]
1. it is speeded up on a humid day
2. it is due to the escape of the least energetic particles
3. heat is given out in the process
4. it is speeded up on a breezy day
Which of these statements is true about evaporation? [sm-63]
1. it is speeded up on a warm day
2. it is due to the escape of the least energetic particles
3. heat is given out in the process
4. it is speeded up on a humid day
The body is cooled down by sweating. This process mainly involves the heat transfer process of? [sm-64]
1. conduction
2. convection
3. evaporation
4. radiation
Which of the following describes heat transfer due to evaporation? [sm-65]
1. transfer due to the movement of volumes of gases or liquids
2. transfer due to loss of energetic particles from the surface of a liquid
3. transfer by infrared waves which can pass through air
4. transfer due to the vibration of particles in contact with each other
Which of the following best explains why gases diffuse throughout a container? [sm-66]
1. there are no attractive forces between the particles of a gas
2. gases have a low density
3. gas particles move fast
4. gas particles are very small
Which of the following best explains why gases have a low density? [sm-67]
1. the gas particles are very small
2. the particles are far apart
3. gas particles move fast
4. the attractive force between particles are very weak
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-1]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
has a fixed melting point? true or false? true or false? true or false?
1. true, true, false
2. true, false, false
3. false, false, true
4. false, true, true
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-2]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
has only one type of atom? true or false? true or false? true or false?
1. true, true, false
2. true, false, false
3. false, false, true
4. false, true, true
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-3]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
always has the same composition? true or false? true or false? true or false?
1. false, true, true
2. true, false, false
3. true, true, false
4. false, false, true
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-4]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
has a definite chemical symbol or formula? true or false? true or false? true or false?
1. false, false, true
2. true, false, true
3. false, true, false
4. true, true, false
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-5]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
has no fixed boiling point? true or false? true or false? true or false?
1. false, false, true
2. true, false, true
3. false, true, false
4. true, true, false
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-6]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
is easily separated into different substances? true or false? true or false? true or false?
1. false, true, true
2. false, false, true
3. true, true, false
4. true, false, false
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-7]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
has more than one type of atom? true or false? true or false? true or false?
1. true, true, false
2. false, false, true
3. false, true, true
4. true, false, false
Given the STATEMENT about ...., decide whether it is TRUE or FALSE for an ELEMENT, COMPOUND or MIXTURE [8f-8]
STATEMENT about .... ELEMENT COMPOUND MIXTURE
there are only about 100 of them? true or false? true or false? true or false?
1. true, true, false
2. false, false, true
3. false, true, true
4. true, false, false
/What is the formula of the molecule? [8f-9]
1. C₂H₆O
2. ₂C₆HO
3. C₃H₆
4. C₆H₂O
What is the formula of the molecule? [8f-10]
1. C₅H₆I₂
2. C₃H₆Cl₂
3. C₆H₃Cl₂
4. C₂H₆Cl₃
What is the formula of the molecule? [8f-11]
1. C₈H₃
2. ₃C₈H
3. C₃H₈
4. C₃H₆
What is the formula of the molecule? [8f-12]
1. C₂H₆O₃
2. ₃C₆H₂O
3. C₅H₆O
4. C₃H₆O₂
When some salt is dissolved in plenty of water, which statement is most likely TRUE about the resulting solution? [8f-13]
1. the boiling point is higher than pure water
2. the freezing point is higher than pure water
3. the boiling point decreases the longer the solution is boiled
4. the solution becomes less concentrated the longer it is boiled
When some salt is dissolved in plenty of water, which statement is most likely TRUE about the resulting solution? [8f-14]
1. the boiling point is lower than pure water
2. the freezing point is lower than pure water
3. the boiling point decreases the longer the solution is boiled
4. the solution becomes less concentrated the longer it is boiled
When some salt is dissolved in plenty of water, which statement is most likely TRUE about the resulting solution? [8f-15]
1. the boiling point is lower than pure water
2. the freezing point is higher than pure water
3. the boiling point increases the longer the solution is boiled
4. the solution becomes less concentrated the longer it is boiled
When some salt is dissolved in plenty of water, which statement is most likely TRUE about the resulting solution? [8f-16]
1. the boiling point is lower than pure water
2. the freezing point is higher than pure water
3. the boiling point decreases the longer the solution is boiled
4. the solution becomes more concentrated the longer it is boiled
Which order of the three words matches the three substances iron, iron oxide, steel ?, ?, ? [8f-17]
1. element, compound, mixture
2. compound, element, mixture
3. mixture, compound, element
4. element, mixture, compound
Which order of the three words matches the three substances salt, sodium, seawater ?, ?, ? [8f-18]
1. element, compound, mixture
2. compound, element, mixture
3. mixture, compound, element
4. element, mixture, compound
Which order of the three words matches the three substances brass, copper oxide, zinc ?, ?, ? [8f-19]
1. element, compound, mixture
2. compound, element, mixture
3. mixture, compound, element
4. element, mixture, compound
Which order of the three words matches the three substances hydrogen, petrol, water ?, ?, ? [8f-20]
1. element, compound, mixture
2. compound, element, mixture
3. mixture, compound, element
4. element, mixture, compound
Which order of the three words matches the three substances carbon dioxide, coal, carbon ?, ?, ? [8f-21]
1. compound, mixture, element
2. mixture, compound, element
3. element, mixture, compound
4. compound, element, mixture
Which order of the three words matches the three substances plaster of Paris, gypsum, flowers of sulfur ?, ?, ? [8f-22]
1. compound, mixture, element
2. mixture, compound, element
3. element, mixture, compound
4. compound, element, mixture
Which order of the three words matches the three substances chlorine, rock salt, sodium chloride ?, ?, ? [8f-23]
1. compound, mixture, element
2. mixture, compound, element
3. element, mixture, compound
4. compound, element, mixture
Which order of the three words matches the three substances sodium hydroxide, oxygen, bleach ?, ?, ? [8f-24]
1. compound, mixture, element
2. mixture, compound, element
3. element, mixture, compound
4. compound, element, mixture
Which two words apply to the substance nitrogen? [8f-25]
1. gas, element
2. liquid, compound
3. solid, mixture
4. gas, compound
Which two words apply to the substance copper sulfate? [8f-26]
1. gas, element
2. solid, compound
3. solid, mixture
4. gas, compound
Which two words apply to the substance wood? [8f-27]
1. gas, element
2. solid, compound
3. solid, mixture
4. gas, compound
Which two words apply to the substance sulfur dioxide? [8f-28]
1. gas, element
2. solid, compound
3. solid, mixture
4. gas, compound
Which two words apply to the substance vinegar? [8f-29]
1. liquid, mixture
2. solid, element
3. gas, mixture
4. liquid, element
Which two words apply to the substance magnesium? [8f-30]
1. liquid, mixture
2. solid, element
3. gas, mixture
4. liquid, element
Which two words apply to the substance air? [8f-31]
1. liquid, mixture
2. solid, element
3. gas, mixture
4. liquid, element
Which two words apply to the substance mercury? [8f-32]
1. liquid, mixture
2. solid, element
3. gas, mixture
4. liquid, element
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-33]
1. at the start they are a mixture
2. at the end they are a mixture
3. at the start they cannot be separated with a magnet
4. at the end they can be separated with a magnet
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-34]
1. at the start they are a compound
2. at the end they are a compound
3. at the start they cannot be separated with a magnet
4. at the end they can be separated with a magnet
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-35]
1. at the start they are a compound
2. at the end they are a mixture
3. at the start they can be separated with a magnet
4. at the end they can be separated with a magnet
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-36]
1. at the start they are a compound
2. at the end they are a mixture
3. at the start they cannot be separated with a magnet
4. at the end they cannot be separated with a magnet
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-37]
1. the colour change suggests a chemical reaction has happened overall
2. FeS describes them at the start, Fe + S describes them at the end
3. at the start, acid will act on the iron forming hydrogen and the same gas is formed with acid and the dark-grey solid product
4. the red glow without heating shows overall a physical change has happened to the mixture when cool
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-38]
1. the colour change suggests a physical change has happened overall
2. Fe + S describes them at the start, FeS describes them at the end
3. at the start, acid will act on the iron forming hydrogen and the same gas is formed with acid and the dark-grey solid product
4. the red glow without heating shows overall a physical change has happened to the mixture when cool
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-39]
1. the colour change suggests a physical change has happened overall
2. FeS describes them at the start, Fe + S describes them at the end
3. at the start, acid will act on the iron forming hydrogen and hydrogen sulfide gas is formed with acid and the dark-grey solid product
4. the red glow without heating shows overall a physical change has happened to the mixture when cool
Silvery grey iron filings are added to yellow sulfur powder in a test tube. The contents of the test tube were strongly heated until they glowed red without further heating to form a dark grey dull solid. Which statement is TRUE about the contents of the test tube in the experiment? [8f-40]
1. the colour change suggests a physical change has happened overall
2. FeS describes them at the start, Fe + S describes them at the end
3. at the start, acid will act on the iron forming hydrogen and the same gas is formed with acid and the dark-grey solid product
4. the red glow without heating suggests overall a chemical change has happened to the mixture when cool
Which method of separation is best to use for separating petrol from crude oil? [8f-41]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for obtaining salt from seawater? [8f-42]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for removing silt from muddy water? [8f-43]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for investigating the composition of food dyes in sweet colours? [8f-44]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for purifying water containing small quantities of dissolved minerals? [8f-45]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for obtaining fertiliser crystals from neutralising nitric acid solution with the alkali ammonia? [8f-46]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for separating a solid product* formed from mixing two solutions? (* called a precipitate) [8f-47]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which method of separation is best to use for checking which ink was used in a forged cheque? [8f-48]
1. distillation
2. evaporation
3. filtration
4. chromatography
Which particle is a compound made up of three elements? [8f-49]
1. 8
2. 2
3. 4
4. 7
Which particle is a compound made up of three elements? [8f-50]
1. 2
2. 9
3. 4
4. 7
Which particle is an element made up of single atoms? [8f-51]
1. 1
2. 6
3. 3
4. 5
Which particle is a compound made up of two elements? [8f-52]
1. 3
2. 5
3. 6
4. 1
Which particle is a compound made up of two elements? [8f-53]
1. 7
2. 8
3. 6
4. 3
Which particle is a molecule made of 4 atoms? [8f-54]
1. 7
2. 6
3. 8
4. 2
Which particle is formed when two different colourless gases chemically combine? [8f-55]
1. 7
2. 6
3. 4
4. 2
Which particle is formed when a black solid and a colourless gas chemically combine? [8f-56]
1. 9
2. 6
3. 4
4. 2

STATEMENT about ....	ELEMENT	COMPOUND	MIXTURE
has a fixed melting point?	true or false?	true or false?	true or false?

Edexcel GCSE 9-1 CHEMISTRY/Combined Science QUIZ on TOPIC 2 "STATES of MATTER"

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