Changes Around Us: Physical and Chemical
Class 7 · Science
3 ideas in Class 7 Science, explained in plain words, with games and quizzes to practise.
Changes in Form and State
Part of: Physical Changes
This concept explains changes in form and state using observations of materials.
Why it matters. Recognising the kind of change helps explain what happens to materials around us.
Try it in two minutes
- Describe what changed.
- Check if a new substance formed.
- Classify the change using that evidence.
Try at home. Observe ice melting safely and describe what changed and what stayed the same.
Formation of New Substances
Part of: Chemical Changes
This concept explains formation of new substances using observations of materials.
Why it matters. Recognising the kind of change helps explain what happens to materials around us.
Try it in two minutes
- Describe what changed.
- Check if a new substance formed.
- Classify the change using that evidence.
Try at home. Observe ice melting safely and describe what changed and what stayed the same.
Mixed Examples and Evidence
Part of: Sorting Changes
This concept explains mixed examples and evidence using observations of materials.
Why it matters. Recognising the kind of change helps explain what happens to materials around us.
Try it in two minutes
- Describe what changed.
- Check if a new substance formed.
- Classify the change using that evidence.
Try at home. Observe ice melting safely and describe what changed and what stayed the same.
What your child will practise
- Changes in Form and State: Desert Puzzle (Clue Puzzle)
- Changes in Form and State: Mission Control Quest (Match It Up)
- Changes in Form and State: Ocean Quick Fire (Quick Fire)
- Formation of New Substances: Jungle Quick Fire (Quick Fire)
- Mixed Examples and Evidence: Lab Explorer Sort (Sort It Out)
- Quiz: Changes in Form and State (8 questions)
- Quiz: Formation of New Substances (8 questions)
- Quiz: Mixed Examples and Evidence (8 questions)