Particle model GCSE questions
Cover the answers and try these Particle model checks first. The full quiz in the app includes hints.
How to use these
Write your answer, then check. If you miss one, open the Particle model lesson before you retry.
Practice questions
Cover the answers and have a go first. Worked solutions are underneath.
Density is
A 400 g object has volume 80 cm³. Density is
1.0 g/cm³ is the same as
Volume of an irregular stone is best found with
Common mistakes
- Do not mix cm and m in one calculation. 1 m^3 is not 100 cm^3.
- The object must be fully submerged. If it floats, Combined usually still expects you to say push it under or use a sinker - do not invent a volume from a floating waterline.
- Do not use the final temperature as Δθ. Mass must be in kg if c is in J/kg°C.
- Do not say bonds in molecules are broken when ice melts. You are overcoming attractions between particles, not splitting H2O into H and O.
Answers and working
Frequently asked questions
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