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Grade 9 Physical & Chemical Changes Worksheet with Answers
Grade 9 (US) · Year 10 (UK) · Class 9 (India) · Chemistry
Unit 1: MatterPhysical & Chemical Changes
Telling physical changes from chemical changes and recognizing signs of a reaction. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
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Practice Sheetaethelsystems.comPhysical & Chemical Changes
Grade 9 · Chemistry
Name
Class
Date
Learning goal: Physical & Chemical Changes
Directions: This worksheet has 2 parts. Read the instructions at the start of each part.
Physical or chemical change? Iron rusting
Answer: chemical
RememberPhysical or chemical change?
Physical or Chemical change? Tick one box for each.
| Physical | Chemical change | |
|---|---|---|
1Dissolving sugar in tea | ||
2Boiling water | ||
3Cutting paper | ||
4Ice melting | ||
5Crushing a can |
Answer each question. Use full sentences where you can.
- 6
Physical or chemical change? Milk going sour
- 7
Physical or chemical change? Baking bread
- 8
Physical or chemical change? Digesting food
- 9
Name two signs of a chemical change.
- 10
Physical or chemical change? A firework exploding
- 11
Why is dissolving salt in water a physical change?
- 12
Physical or chemical change? Wood burning
★ Challenge corner for fast finishers
If Earth stopped spinning, how long would one day (sunrise to sunrise) be?
How did I do?
Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/chemistry/9/phys_chem_changes
Answer key — Physical & Chemical Changes (Grade 9)
- 1.physical
- 2.physical
- 3.physical
- 4.physical
- 5.physical
- 6.chemical
- 7.chemical
- 8.chemical
- 9.gas bubbles, color change, new smell, light or heat, precipitate (any two)
- 10.chemical
- 11.no new substance forms; you can get the salt back by evaporation
- 12.chemical
- ★about one year
Answer key (click to show)
- 1.physical
- 2.physical
- 3.physical
- 4.physical
- 5.physical
- 6.chemical
- 7.chemical
- 8.chemical
- 9.gas bubbles, color change, new smell, light or heat, precipitate (any two)
- 10.chemical
- 11.no new substance forms; you can get the salt back by evaporation
- 12.chemical
- ★about one year (challenge corner)
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