Start learning →

ICSE Class 8 Matter — practice questions

Explore 21 free Matter questions in ICSE Class 8 Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

Practise Matter with Quill →

Matter questions and exercises with answers

Showing questions 1–21 of 21.

For an ordinary chemical mass-balance test, what makes a system closed?Read the answer and worked solution →A precipitate forms in a sealed flask. Total mass?Read the answer and worked solution →A metal forms only its oxide in air and gains mass. Which air component is added?Read the answer and worked solution →Wood leaves less ash after burning in an open vessel. Where did much material go?Read the answer and worked solution →Some starting solid remains unused. A mass balance includes?Read the answer and worked solution →12 g and 8 g react fully, giving 15 g solid plus gas only. Gas mass?Read the answer and worked solution →10 g metal forms 13 g oxide with oxygen only. Oxygen mass combined?Read the answer and worked solution →5 g sugar dissolves in 100 g water without loss. Solution mass?Read the answer and worked solution →Mass is conserved in an ordinary reaction. Which need NOT remain unchanged?Read the answer and worked solution →A gas jar stands still on a desk. What does its particle model predict?Read the answer and worked solution →What motion do particles in an ordinary solid mainly make?Read the answer and worked solution →What particle behaviour lets a liquid flow?Read the answer and worked solution →What keeps the particles of a solid close to their fixed positions?Read the answer and worked solution →A liquid flows. What is true of the forces between its particles?Read the answer and worked solution →On compressing a gas without state change, what shrinks?Read the answer and worked solution →Gas temperature rises. What increases in the particle model?Read the answer and worked solution →In a non-reacting gas model, a collision can change which property?Read the answer and worked solution →What causes gas pressure on a container wall?Read the answer and worked solution →Water vaporises without reacting. What is chemically unchanged?Read the answer and worked solution →During condensation of a pure vapour, its particles generally become?Read the answer and worked solution →Which name describes a gas changing directly into a solid?Read the answer and worked solution →

Worked practice questions

For an ordinary chemical mass-balance test, what makes a system closed?

  1. Matter can enter but not leave
  2. Matter can leave but not enter
  3. Matter cannot enter or leave
  4. Liquids enter but gases cannot
Show answer and solution

Correct answer: C. Matter cannot enter or leave

A closed system prevents matter crossing its boundary, so all reacting material remains accounted for.

Open this question →

A precipitate forms in a sealed flask. Total mass?

  1. It remains equal to its start
  2. It becomes the solid's mass
  3. It rises with the precipitate
  4. It falls as particles settle
Show answer and solution

Correct answer: A. It remains equal to its start

Formation of a new solid redistributes material within the sealed flask without changing total mass.

Open this question →

A metal forms only its oxide in air and gains mass. Which air component is added?

  1. Argon
  2. Neon
  3. Oxygen
  4. Nitrogen
Show answer and solution

Correct answer: C. Oxygen

The oxide contains oxygen taken from the air as well as the original metal.

Open this question →

How to practise

  1. Choose a Matter question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Matter practice for ICSE Class 8. Read explanations as you go. No signup form needed to start.

Practise Matter →

More Chemistry topics

Alcohols Phenols EthersAlkenesAtomic combinationsAtomsAtoms and ElementsAtoms and MoleculesChemical EquilibriumChemistry