Chemistry Notes: Questions on the Periodic Table Scroll down and take
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Doc Brown's Science-Chemistry Revision Questions
A PERIODIC TABLE worksheet of Questions
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Some formulae and symbols to help in the questions:
Na2O, NaCl, NaOH, H2, HCl, Cl2, NaCl
Q1. Using the atomic symbols or formulae: Na, Cl, NaCl and HCl; explain the meaning of the terms (a) atom, (b) molecule, (c) element, (d) compound, (e) ionic bonding and (f) covalent bonding
Q2. (a) What period and group is the element sulphur in? What type of element is it?
(b) What period and group is the element magnesium in? What type of element is it?
(c) What period and series is the element iron in? What type of element is it?
In each case give some typical physical properties and chemical properties of the element.
Q3. (a) What group, and its name, does the element krypton belong to? (atomic number 36)
What physical and chemical properties would you expect krypton to have?
(b) explain why helium is used in airships and why it is safer than hydrogen?
(c) explain why argon is used in tungsten filament lamps
(d) why are the elements He, Ne, Ar, Kr etc. so unreactive?
Q4. (a) give, and explain, the electrode equations to show what is formed at the anode and cathode when electrical current is passed through an aqueous solution of sodium chloride
(b) what substance is left in solution and why is it an alkali?
(c) give the symbol equation for the reaction between sodium hydroxide and hydrochloric acid. What type of reaction is it?
Q5. The element Rubidium (Rb) has an atomic number of 37 and a mass of 85.
(a) How many electrons, protons and neutrons are there in an atom of Rubidium?
Based on your knowledge of Lithium, Sodium and Potassium PREDICT ...
Q6. (a) describe the appearance of The Halogens, chlorine, bromine and iodine
(b) describe three uses of chlorine
(c) is chlorine more or less reactive than iodine? explain the Group 7 reactivity trend
(d) (i) what do you observe if chlorine is bubbled into a solution of potassium iodide?
The element Astatine is in the same group as Cl, Br and I, but below iodine. PREDICT ...
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