Which is an electron arrangement of a Noble Gas? [gp0-4]
2.8.1
2.8.7
2.8.8.2
2
Which is an electron arrangement of a Noble Gas? [gp0-5]
2.8
2.8.7
2.8.8.2
2.8.18.2
Which is an electron arrangement of a Noble Gas? [gp0-6]
2.8.2
2.8.8
2.8.18.7
2.1
Which statement is TRUE about the Noble Gases? [gp0-7]
they readily react with chlorine
down the group the colour of the gas gets darker
they are poor conductors of heat
they are good conductors of electricity
Which statement is TRUE about the Noble Gases? [gp0-8]
they readily react with chlorine
down the group the colour of the gas gets darker
they are good conductors of heat
they are poor conductors of electricity
Which statement is TRUE about the Noble Gases? [gp0-9]
they are very unreactive gases
down the group the colour of the gas gets darker
they are good conductors of heat
they are good conductors of electricity
Which statement is TRUE about the Noble Gases? [gp0-10]
they readily burn in oxygen
they are all colourless gases
they are good conductors of heat
they are good conductors of electricity
Which Noble Gas is used in filament bulbs to stop the filament burning out too quickly? [gp0-11]
neon
helium
argon
krypton
Which Noble Gas is used in balloons? [gp0-12]
argon
krypton
neon
helium
Which gas is used in electrical discharge lights? [gp0-13]
neon
helium
nitrogen
oxygen
Which gas is used in laser beams? [gp0-14]
nitrogen
krypton
helium
oxygen
Which gas has been replaced by safer helium in airships? [gp0-15]
carbon dioxide
nitrogen
hydrogen
oxygen
Which gas is used to provide a non-oxidising atmoshere in welding operations? [gp0-16]
neon
helium
carbon dioxide
argon
Which statement explains the lack of chemical reactivity by Noble Gases? [gp0-17]
they have a stable full outer shell of electrons
it is impossible to ionize the gases because too much energy is required
they form very stable molecules of two combined atoms
the lower energy, inner full shells of electrons cannot be used in chemical bonding
In which section of the Periodic Table will you find the Noble Gases? [gp0-18]
section (1)
section (5)
section (3)
section (4)
section (2)
The Noble Gases consist of? [gp0-19]
diatomic molecules
triatomic molecules
single free atoms
atoms linked by weak bonds
Which reason best accounts for the use of helium in modern airships? [gp0-20]
lighter than air and cheap to produce
expensive, but easy to store in cylinders
expensive, but a very unreactive gas
less dense than air and not flammable
Which statement is TRUE about the trend, with increasing atomic number, down the Group of Noble Gases? [gp0-21]
the boiling points increase
the melting points decrease
the density decreases
the reactivity decreases
Which statement is TRUE about the trend, with increasing atomic number, down the Group of Noble Gases? [gp0-22]
the boiling points decrease
the melting points increase
the density decreases
the reactivity decreases
Which statement is TRUE about the Group of Noble Gases? [gp0-23]
they are all dense gases
they are lightly coloured gases
they have low melting points and boiling points
they will all burn in pure oxygen
In 1962 a Canadian chemist, Bartlet, managed to combine xenon with the highly reactive Halogen gas fluorine to make xenon tetrafluoride. Which equation is correct in maling xen tetrafluoride? [gp0-24]
Xe2 + 2F2 ==> XeF4
2Xe + 4F ==> 2XeF4
Xe2 + 8F2 ==> 2XeF4
Xe + 2F2 ==> XeF4
Which is TRUE about the 'Noble Gases'? [gp0-25]
they are very unreactive
they have a great tendancy to share or gain electrons to form a chemical bond
argon is used in welding to keep the surrounding metal cool
argon is used in lamps to make the metal filament a better conductor
Which is TRUE about the 'Noble Gases'? [gp0-26]
they are very reactive
they have little tendancy to share or gain electrons to form a chemical bond
argon is used in welding to keep the surrounding metal cool
argon is used in lamps to make the metal filament a better conductor
Which is TRUE about the 'Noble Gases'? [gp0-27]
they are very reactive
they have a great tendancy to share or gain electrons to form a chemical bond
argon is used in welding to stop oxidation of the metal
argon is used in lamps to make the metal filament a better conductor
Which is TRUE about the 'Noble Gases'? [gp0-28]
they are very reactive
they have a great tendancy to share or gain electrons to form a chemical bond
argon is used in welding to keep the surrounding metal cool
argon is used in lamps to stop the metal filament from being oxidised
Which is an electron arrangement of a Noble Gas? [gp0-29]