Chemistry 5070 · O Level
Solids, liquids and gases
43 practice questions on Solids, liquids and gases, with worked solutions and instant marking.
Oil will float on water. Which statement about oil and water is not true?
May/June 2016
A student is examining how soluble potassium chlorate(V) and sodium chloride are, using the apparatus shown.
May/June 2017
A gas has a lower density than air and is soluble in water. Which diagram shows the correct way to collect this gas?
May/June 2018
The diagrams illustrate how particles are arranged in three solids: $X$, $Y$ and $Z$. The three solids are krypton, potassium and sodium chloride. Which row gives the correct identification of $X$, $Y$ and $Z$?
May/June 2018
The diagrams illustrate the particle arrangements in three solids: X, Y and Z. These three solids are krypton, potassium and sodium chloride. Which row gives the correct identification of X, Y and Z?
May/June 2018
Use the gases in the list below to answer the questions. ammonia carbon dioxide chlorine butane hydrogen nitrogen oxygen propane sulfur dioxide You may use each gas once, more than once, or not at all. Which gas fits each description:
May/June 2018
Which of the following statements about some gases found in air is correct?
May/June 2019
Which statement regarding gases in the atmosphere is correct?
May/June 2021
Which statement about states of matter is correct?
May/June 2021
Oxygen, sulfur, selenium, tellurium and polonium belong to Group VI.
May/June 2021
What gases are used inside light bulbs?
May/June 2022
Which row gives the correct description of how the particles change when a substance freezes?
May/June 2022
Which statement about these substances, at room temperature and pressure, is correct?
May/June 2022
The diagram illustrates an experiment used to find the percentage of oxygen in air. Which diagram shows the correct water level after the candle has stopped burning?
May/June 2022
Which combination of changes in the conditions causes the volume of a gas to increase?
May/June 2022
For a change of state occurring at constant temperature and pressure: • energy is given out as stronger attractive forces develop between the particles • the mean separation between the particles alters only a little. Which change of state is being described?
May/June 2023
Iodine is present in a sample at room temperature and pressure. Which statement about the particles in this sample is correct?
May/June 2023
A scientist heats a liquid sample. The scientist records the sample’s temperature and draws a graph showing temperature against time. Which statements are correct?
May/June 2024
The table gives the melting points and boiling points of four compounds, W, X, Y and Z. These four compounds are silicon(IV) oxide, ethane, bromine and a carboxylic acid with formula $\text{C}_{16}\text{H}_{32}\text{O}_2$. Which row shows the identities of W, X, Y and Z?
May/June 2024
At room temperature, chlorine exists as a gas. At room temperature, iodine exists as a solid.
May/June 2024
Oxygen exists as a gas at room temperature, whereas sulfur is a solid at room temperature.
May/June 2024
When the temperature is X, raising the pressure from $1\,\text{atm}$ to $2\,\text{atm}$ leaves the volumes of the hexane and pentane samples unchanged. At temperature X, pentane molecules are able to move freely, but hexane molecules are arranged in fixed positions. What are the states of hexane and pentane at temperature X?
May/June 2025
Bromine, Br$_2$, is placed in Group VII of the Periodic Table.
May/June 2025
A student arranged a tube as shown in the diagram. Concentrated hydrobromic acid gives off fumes of hydrogen bromide. Concentrated aqueous ammonia gives off fumes of ammonia.
Oct/Nov 2015
Which of the following statements about the uses of gases is incorrect?
Oct/Nov 2016
Which diagram represents how the particles are arranged inside a balloon that contains a mixture of the gases nitrogen and oxygen?
Oct/Nov 2017
Equal masses of methane gas are kept under different conditions. At which set of conditions will the methane gas take up the smallest volume?
Oct/Nov 2017
Which diagram represents how the particles are arranged inside a balloon that contains a mixture of nitrogen and oxygen gases?
Oct/Nov 2017
The table gives the properties of three gases, $A$, $B$ and $C$.
Oct/Nov 2018
The properties of three gases, A, B and C, are given below. Diagrams of three apparatus arrangements, X, Y and Z, for collecting gases are also shown.
Oct/Nov 2019
Which material has the greatest melting point?
Oct/Nov 2020
Why does a balloon filled with helium gas get smaller when the temperature changes from $30\,^{\circ}\text{C}$ to $10\,^{\circ}\text{C}$?
Oct/Nov 2020
A sample of gas takes up a volume of $2.0\,\text{dm}^3$ at room temperature and pressure. Which changes in the conditions would both make the gas occupy a smaller volume?
Oct/Nov 2020
During a reaction involving gases, the combined volume of the gaseous reactants can be different from the combined volume of the gaseous products. Which reaction gives the largest percentage change in gas volume? (Assume each reaction goes to completion.)
Oct/Nov 2021
State changes take place among solids, liquids and gases. gas $\xrightleftharpoons[P]{R}$ liquid $\xrightleftharpoons[Q]{S}$ solid What changes are happening at P, Q, R and S?
Oct/Nov 2022
Two gases, A and B, are shown with their properties. Several apparatus arrangements, P, Q and R, for gas collection are also illustrated.
Oct/Nov 2022
Three colourless gases A, B and C are given with the following properties: Gas A: denser than air, soluble in water. Gas B: denser than air, insoluble in water. Gas C: less dense than air, soluble in water. Three collections of apparatus, P, Q and R, for collecting gases are shown.
Oct/Nov 2022
In which changes do the particles become more widely spaced? 1. A gas is heated from $0\,^{\circ}\text{C}$ to $25\,^{\circ}\text{C}$. 2. Pressure is exerted on a gas at a constant temperature. 3. Steam changes into water by condensation. 4. Water turns into vapour at room temperature.
Oct/Nov 2023
A solid is put into a flask. The flask is heated gently, and the substance’s temperature is measured at regular intervals. The diagram shows a graph of temperature plotted against time for this experiment. At which point does the flask contain both a solid and a liquid?
Oct/Nov 2023
Which row gives both a property of a gas and the correct reason for that property?
Oct/Nov 2024
The pressure of a sample of air is lowered while its temperature stays constant. Which row shows the changes in the air's volume and in the spacing between the particles in the air?
Oct/Nov 2025
Distinct samples of water and air each occupy a volume of $30\text{ cm}^3$ at room temperature and pressure. The pressure on both samples is then raised by the same amount while they remain at room temperature. Which row shows the volumes at the higher pressure?
Oct/Nov 2025
Why does a balloon filled with helium gas decrease in size when the temperature changes from $30\,^{\circ}\mathrm{C}$ to $10\,^{\circ}\mathrm{C}$?
Oct/Nov 2025