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Physical and Chemical Changes Worksheet

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Physical and Chemical Changes Worksheet

For each change, decide whether matter has only changed form or whether a new substance has formed. A physical change does not make a new substance; a chemical change does. Clues such as gas, colour change or temperature change can be useful, but explain what they show.

The evidence board

Hemi is helping prepare a community picnic. She notices these changes: ice melts in a chilly bin; an apple slice turns brown; fizzy bubbles form when baking soda is mixed with vinegar; and sugar disappears when stirred into water. Use the evidence, not just whether a change can be undone, to classify each one.

1.The ice melts in the chilly bin. Is this a physical or chemical change? Explain what has changed and whether a new substance has formed.

2.The apple slice turns brown after being cut. Which type of change is most likely happening? Give one observation that supports your decision.

3.Baking soda and vinegar make bubbles when mixed. What does the bubbling suggest, and what type of change has occurred?

A gas is being produced; chemical change
A solid is melting; physical change
The mixture is changing shape; physical change
The liquid is evaporating; physical change

4.Sugar disappears as it is stirred into water. Is this a physical or chemical change? Explain how the sugar could be recovered.

5.Match each picnic change to its best classification: (A) tearing a paper napkin, (B) toasting bread, (C) freezing juice, (D) iron rusting in the rain.

A. Tearing a paper napkin
B. Toasting bread
C. Freezing juice
D. Iron rusting in the rain

Physical change
Physical change
Chemical change
Chemical change

Sort the clues

A clue is evidence, but some clues can happen during either kind of change. Think about whether a new substance is made.

6.True or false? Every colour change proves that a chemical change has happened. Correct the statement if it is false.

TrueFalse

7.Fill in the blanks: In a change, no new substance forms. In a change, one or more new substances form.

8.A student heats a green copper compound. It turns black and a gas is released. Explain why these observations are evidence for a chemical change.

9.A class wants to test whether dissolving salt in water is a physical change. Describe a safe method and the result that would support your conclusion.

10.Choose one change from this worksheet. Explain why reversibility alone is not enough to decide whether a change is physical or chemical.

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Physical and Chemical Changes Worksheet

Physical and Chemical Changes Worksheet

The evidence board

Sort the clues

3 printable pages

About This Worksheet

Free in Kuraplan

Print-Ready

AI-Generated

For Teachers & Parents

Need a custom version of this worksheet?

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