Worksheetsgrade 10 A
Total questions: 20
Worksheet time: 17mins
During a reaction, the following changes take place.
1 The temperature rises.
2 A gas is given off.
Which apparatus is required to measure the rate of this reaction?
balance and burette
balance and gas syringe
gas syringe and burette
gas syringe and stopclock
Which statement about bonding is not correct?
Carbon can form four single covalent bonds.
Chlorine atoms react to gain a noble gas electronic structure.
Covalent bonding involves losing and gaining electrons.
Hydrogen molecules have the formula H2.
The diagram shows apparatus for plating a spoon with silver.
Which statement is not correct?
Silver would stick to the spoon because it is a very reactive metal.
The electrolyte would be a silver salt dissolved in water.
The metal electrode would be made from silver.
The spoon would be connected to the negative terminal of the power supply.
When copper is heated in air a black coating forms on the copper.
What happens to the copper in this reaction?
The copper catches fire
The copper decomposes.
The copper gains oxygen
The copper loses oxygen
Which two processes are involved in the preparation of magnesium sulfate from dilute sulfuric
acid and an excess of magnesium oxide?
neutralisation and filtration
neutralisation and oxidation
thermal decomposition and filtration
thermal decomposition and oxidation
Which statement about aqueous sodium hydroxide is correct?
When it is added to a solution containing sulfate ions, a white precipitate is formed.
When it is added to a solution of copper(II) ions, a blue precipitate is formed which dissolves
in excess to give deep blue solution.
When it is added to a solution of iron(II) ions, a green precipitate is formed which does not
dissolve in excess.
When it is added to ammonium chloride, a gas is produced which turns blue litmus red.
Which pair of elements will react together most violently?
chlorine and lithium
chlorine and potassium
iodine and lithium
iodine and potassium
Which is not a characteristic property of transition metals?
act as catalysts
form coloured compounds
high melting point
low density
Metal X lies between zinc and iron in the reactivity series.
Which statements about metal X are correct?
1 It reacts with steam to produce hydrogen gas.
2 It does not react with steam but will produce hydrogen with dilute acid.
3 The metal can be obtained from its oxide by heating strongly with charcoal.
4 The metal oxide cannot be reduced using carbon.
1 and 3
1 and 4
2 and 3
2 and 4
The table describes three types of water.
Which statement is correct?
Only Q and R are suitable for drinking, while P could be used for irrigation.
Only Q and R are suitable for drinking, while P is unsuitable for any purpose.
Only Q is suitable for drinking. R could be used for washing cars and P for irrigation.
P, Q and R are suitable for irrigation and washing cars, but are not suitable for drinking.
A student wanted to follow how the rate of the reaction of sodium sulfite with acid varies with
time. The reaction produces gaseous sulfur dioxide.
Which apparatus is not suitable?
Which statement describes the conversion of magnesium atoms to magnesium ions?
The change is reduction, because there has been a gain of electrons.
The change is oxidation, because there has been a loss of electrons.
The change is reduction, because there has been a loss of electrons.
The change is oxidation, because there has been a gain of electrons.
Which colour change occurs when ethanol is added to a small quantity of warm, acidified
potassium dichromate(VI)?
orange to colourless
orange to green
purple to colourless
purple to green
When the product of a reaction between two gases is added to water, a solution of pH7 is formed.
Which could be these gases?
hydrogen and chlorine
hydrogen and nitrogen
hydrogen and oxygen
oxygen and carbon monoxide
When pure gas X was passed through the apparatus shown, the copper(II) oxide turned pink and
the limewater stayed colourless.
What is gas X?
Carbon dioxide
carbon monoxide
hydrogen
nitrogen
Which reagent is added to aqueous potassium chloride to prepare lead chloride?
Aqueous lead nitrate
lead
lead carbonate
lead sulfate
The diagram shows the structure of an alloy.
Which statement about alloys is correct?
Alloys can only be formed by mixing copper or iron with other metals.
High carbon steel alloys are soft and easily shaped.
In an alloy there is attraction between positive ions and delocalised electrons.
The alloy brass has a chemical formula.
Aluminium is manufactured by the electrolysis of molten aluminium oxide.
Which gas is not formed during this process?
carbon dioxide
carbon monoxide
oxygen
sulfur dioxide
Which diagram correctly illustrates the conditions necessary for the rusting of iron and also the
metal that can be used to prevent rusting by sacrificial protection?
Poly(ethene) is the addition polymer formed from the monomer ethene.
Which statement is correct?
Poly(ethene) can be disposed of by burning – this produces carbon dioxide and water.
Poly(ethene) decolourises bromine water.
Poly(ethene) has the empirical formula C2H4.
Poly(ethene) is acted upon by bacteria so that it decomposes quickly when in a landfill site
