Lithium, sodium and potassium are Group 1 elements.
What happens when these elements are added to water?
Some float and carbon dioxide gas and an alkaline solution are made.
Some float and hydrogen gas and an alkaline solution are made.
They all float and hydrogen gas and an acidic solution are made.
They all float and hydrogen gas and an alkaline solution are made.
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The bar chart shows the melting points of Group 1 elements.
What are the melting points of rubidium and caesium?
| Melting point of rubidium (°C) | Melting point of caesium (°C) |
A | 39 | 29 |
B | 40 | 25 |
C | 29 | 41 |
D | 41 | 25 |
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Which statement about noble gases is not correct?
They are diatomic
They have low densities
Their boiling points increase going down the group
They are unreactive
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Lithium, sodium and potassium all react with water.
In all three reactions the same gas is produced.
What is the name of the gas?
Carbon dioxide
Chlorine
Hydrogen
Oxygen
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Astatine is found below iodine in Group 7 of the periodic table.
What is its formula and state at room temperature?
| Formula | State at room temperature |
A | At | gas |
B | At | solid |
C | At2 | liquid |
D | At2 | solid |
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When sodium reacts with water an alkaline solution is formed.
Which statement about why this happens it true?
It contains an ionic compound
It contains hydroxide ions
It contains water
Hydrogen gas is made
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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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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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A student was investigating the reactivity of different metals in hydrochloric acid.
Which statement about the results is true?
Calcium is more reactive than magnesium because its outer electrons are less easily lost
Copper does not react because it is less reactive than hydrogen
Magnesium is more reactive than zinc because it more readily forms negative ions
Zinc reacts with the HCl to form zinc hydroxide and hydrogen gas
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The boiling point of the halogens increases down Group 7.
Which statement explains why?
The covalent bonds get stronger going down the group and require more energy to overcome
The intermolecular forces get stronger going down the group and require more energy to overcome
The intermolecular forces get weaker going down the group and require less energy to overcome
The covalent bonds get weaker going down the group and require less energy to overcome
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Lithium, sodium and potassium all react with water.
In all three reactions the same gas is produced.
What is the name of the gas?
Carbon dioxide
Chlorine
Hydrogen
Oxygen
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The list shows part of the reactivity series of metals including carbon.
Sodium
Lithium
Calcium
Magnesium
Aluminium
Carbon
Zinc
Iron
Tin
Lead
Which row of the table correctly describes how the metals are extracted from their ores?
| Metals extracted by electrolysis | Metals extracted by heating with carbon |
A | Sodium, Magnesium, Zinc | Aluminium, Iron, Tin |
B | Aluminium, Zinc, Iron | Lead, Tin |
C | Calcium, Magnesium, Aluminium | Sodium, Iron, Tin |
D | Sodium, Calcium, Magnesium | Lead, Tin, Zinc |
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Zinc, Zn, reacts with copper sulfate solution, CuSO4.
Zn (s) + CuSO4 (aq) → ZnSO4 (aq) + Cu (s)
What type of reaction is this?
Combustion
Displacement
Neutralisation
Thermal decomposition
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Which statement is correct for a Group 1 element?
It dissolves in water to form a bleach.
It is an inert gas.
It is a non-metal.
It reacts with water to form hydrogen.
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A student reacts some metals with different salt solutions and records her results.
She places a tick (✓) in her results table if she sees a chemical change and a cross (×) if there is no reaction.
Some of the boxes are blanked out.
| Magnesium chloride | Silver nitrate | Copper(II) sulfate | Iron(II) sulfate |
Magnesium |
| ✓ | ✓ | ✓ |
Silver | × |
| × | × |
Copper | × | ✓ |
| × |
Iron | × | ✓ | ✓ |
|
What is the order of reactivity (most reactive to least reactive) of these four metals?
Iron, silver, magnesium, copper
Magnesium, copper, iron, silver
Magnesium, iron, copper, silver
Silver, copper, iron, magnesium
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Bromine reacts with sodium iodide.
What is the balanced symbol equation for the reaction?
Br + NaI → NaBr + I
Br2 + NaI → NaBr + I2
Br2 + 2NaI → 2NaBr + I2
Br2 + NaI2 → NaBr2 + I2
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The Group 7 element fluorine is a gas at room temperature and pressure.
The Group 7 elements show a trend in boiling points going down the group.
Which row shows the boiling points of the Group 7 elements?
| Boiling Point (°C) | |||
| Fluorine | Chlorine | Bromine | Iodine |
A | –188 | 59 | 184 | -15 |
B | –188 | -34 | 59 | 184 |
C | 188 | 184 | 59 | -15 |
D | -15 | 184 | 188 | 59 |
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Chlorine can displace iodine from iodide ions.
Which equation represents this reaction?
Cl + I– → Cl – + I
Cl – + I2 → 2I– + Cl2
Cl2 + 2I– → 2Cl – + I2
Cl2 + I– → 2Cl – + I
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A student reacts some metals with different salt solutions and records her results.
She places a tick (✓) in her results table if she sees a chemical change and a cross (✗) if there is no reaction.
Some of the boxes are blanked out.
| Magnesium chloride | Silver nitrate | Copper(II) sulfate | Iron(II) sulfate |
Magnesium |
| ✓ | ✓ | ✓ |
Silver | ✗ |
| ✗ | ✗ |
Copper | ✗ | ✓ |
| ✗ |
Iron | ✗ | ✓ | ✓ |
|
Which metal has the least tendency to form a positive ion?
Copper
Iron
Magnesium
Silver
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Group 1 elements get more reactive down the group.
Which statement explains why?
The outer electron is closer to the nucleus and lost more easily.
The outer electron is further from the nucleus and lost more easily.
There is less shielding from the inner electrons.
There is more attraction between the nucleus and the outer electron down the group.
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A solution of a lithium halide and a halogen are mixed together. A reaction occurs and the mixture darkens in colour.
What is present in the reaction mixture?
Bromine and lithium chloride
Bromine and lithium fluoride
Chlorine and lithium iodide
Chlorine and lithium fluoride
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Properties of four alkali metals labelled are shown in the table. Which one is placed lowest in the group?
| melting point / oC | density / g cm-3 |
A | 39 | 1.50 |
B | 28.5 | 1.93 |
C | 98 | 0.98 |
D | 63.5 | 0.86 |
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