States of matter — IGCSE Sciences - Co-Ordinated (0654) questions by topic
Sorting substances by state before and after heating, distinguishing statements about solid and gas molecules, matching each state of matter to how its particles are arranged and move, and identifying the melting and boiling changes in water's cycle underpin the 7 states-of-matter questions from 2023 and 2024, worth 8 to 12 marks.
State, complete and identify lead the command words, with describe and explain used where particle behaviour must be justified rather than just matched. Because a single mismatched line-drawing between state and particle description can undo an otherwise correct answer, submit your matching and labelling attempts for instant marking so any confused pairing is caught immediately.
What examiners look for
- A recurring criticism is that candidates often suggested carbon instead of ethanol or water where a specific substance was required.
- Reports note that most candidates did gain full marks on this topic overall.
May–June 2024, Paper 31
Ice is a solid. Water is a liquid. Steam is a gas. Fig. 5.1 shows the different arrangement of the particles in ice, water and steam, labelled A, B and C. State and explain which…
Answer this question and get it marked →May–June 2024, Paper 41
Fig. 6.1 shows a canister filled with liquid chlorine under pressure. When the chlorine is released from the canister, it turns into a gas. Describe the arrangement and separation…
Answer this question and get it marked →May–June 2024, Paper 42
A student heats three substances X, Y and Z in a water-bath. Table 2.1 shows the state before heating, during heating and after cooling: X solid/liquid/solid; Y…
Answer this question and get it marked →October–November 2024, Paper 31
Fig. 8.1 shows the changes of state of water: steam <- water (boiling, change X) <- ice (melting, change Y). Identify the changes of state represented by X and Y.
Answer this question and get it marked →October–November 2024, Paper 41
The arrangement and movement of particles in solids, liquids and gases are different. Draw one line from each state of matter (solid; liquid; gas) to the arrangement and movement…
Answer this question and get it marked →May–June 2023, Paper 41
Fig. 2.1 shows the three states of matter (solid → liquid → gas) with the transitions melting, condensing and others. Complete the labels on Fig. 2.1 (the unlabelled transitions:…
Answer this question and get it marked →October–November 2023, Paper 31
Table 8.1 gives statements about molecules in solids and gases. Put a tick next to each statement to show if it refers to a solid or to a gas. statement solid gas --- --- ---…
Answer this question and get it marked →Other IGCSE Sciences - Co-Ordinated topics
- Practical skills (146)
- Motion, forces and energy (41)
- Organic chemistry (16)
- Electricity and magnetism (15)
- Waves (14)
- Reproduction (13)
- Nuclear physics (13)
- Coordination and response (12)
- Organisms and their environment (12)
- Metals (11)
- Atoms, elements and compounds (10)
- Stoichiometry (9)