Physical and Chemical Change (Grade 8)
Free printable Grade 8 science worksheet on physical and chemical change. Students sort everyday changes and identify the signs that a chemical reaction has happened.
Grade 8 · Science worksheet
Name
Date
Science
Physical and Chemical Change
Classify each change as physical or chemical, then answer the questions about signs of a chemical reaction.
- 1.What is the main difference between a physical and a chemical change?
- 2.Mixing vinegar with bicarbonate of soda so it fizzes: physical change or chemical change?
- a) physical
- b) chemical
- 3.Frying an egg: physical change or chemical change?
- a) physical
- b) chemical
- 4.Name three signs that a chemical reaction has happened.
- 5.Melting ice: physical change or chemical change?
- a) physical
- b) chemical
- 6.Cutting paper into strips: physical change or chemical change?
- a) physical
- b) chemical
- 7.Is burning fuel exothermic or endothermic?
- a) exothermic
- b) endothermic
- 8.A reaction that releases heat to its surroundings is called blank .
- 9.A reaction that takes in heat from its surroundings so the mixture feels cold is called blank .
- 10.In a chemical reaction, what are the starting substances called?
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