11 mark
What is the modern name for atomic weight?
Mass number
Relative formula mass
Atomic number
Relative atomic mass
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1.2 The Periodic Table
21 mark
Iodine is found above astatine in Group 7 of the periodic table.
What is its formula and state at room temperature?
| Formula | State at room temperature | |
| A | I | liquid |
| B | I | solid |
| C | I2 | liquid |
| D | I2 | solid |
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31 mark
The diagram shows the electron structures of some elements. 
Which two elements have similar chemical properties?
A and B
A and C
B and C
B and D
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41 mark
A student carried out a displacement reaction using an unknown halogen and a salt containing a halide ion.
As the reaction progressed they observed the formation of a dark brown solution.
Which halogen and salt did the students react together?
Potassium iodide + bromine
Potassium bromide + chlorine
Potassium chloride + bromine
Potassium chloride + iodine
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51 mark
When sodium reacts with water an alkaline solution is formed.
Which statement explains why this happens?
It contains an ionic compound
It contains hydroxide ions
It contains water
Hydrogen gas is made
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