Physical and Chemical Changes
Science · Grade 6 · Week 29 · 25 questions
Chemical reactions transform substances into entirely new materials with different properties. Understanding reaction types and how to balance equations is central to chemistry.
What you'll practise
- Identify signs of a chemical reaction
- Balance chemical equations
- Classify types of chemical reactions
- Predict products of common reactions
All 25 questions in this Physical and Chemical Changes quiz
Grade 6 Science — Physical and Chemical Changes: 25 practice questions with instant scoring and explanations.
- Melting of ice is an example of...
- Which change is irreversible?
- Rusting of iron is a...
- In physical changes, the substance's...
- Crystallisation of salt from salt solution is a...
- Which is NOT an example of chemical change?
- When iron rusts, it forms...
- Boiling of water is a...
- A physical change is reversible if...
- Which of these is a characteristic of chemical change?
- Tearing of paper is an example of...
- Burning of candle wax is...
- Iron + Oxygen → Iron oxide. This is a...
- Evaporation of water is a...
- When food is digested in our stomach, it undergoes...
- Which process would produce a new substance?
- Freezing of water is...
- Which of the following is a common sign that a chemical reaction has taken place?
- When milk turns sour, it is a...
- Burning of petrol produces...
- Which is a reversible physical change?
- The formation of rust on iron is caused by reaction with...
- In a chemical change, the atomic structure of molecules is...
- Which is an example of crystallisation?
- A substance undergoing a physical change:
Question 1 of 250 correct so far