Physical And Chemical Changes: Spot The Evidence

Practice identifying changes

ScienceGrade 7Mixed10 questions15 min

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Inside this assignment

First 4 questions from the learning flow.

Explorer question style

Physical or Chemical? · 5 questionsRusting and Observations · 5 questions

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Physical or Chemical?

Classify changes using evidence.

Choose the best answer for each question.

Question 1

EasyQuestion

Which observation is the strongest sign that a chemical change has occurred?

Topic: Types of Changes · Skill: Distinguish physical and chemical changes

Question 2

EasyQuestion

Which is mostly a physical change?

Topic: Physical Changes · Skill: Identify changes in shape, size, state and appearance

Question 3

EasyQuestion

When vinegar and baking soda are mixed, bubbles of gas are produced. This is evidence of:

Topic: Chemical Changes · Skill: Identify signs of chemical change

Question 4

MediumQuestion

Rusting of iron mainly needs iron, oxygen and:

Topic: Rusting · Skill: Explain rusting of iron and conditions needed

What this assignment covers

Distinguish physical and chemical changes using new substance formation, observations and rusting.

Skills and sections

Distinguish physical and chemical changes, Identify changes in shape, size, state and appearance, Identify signs of chemical change, Explain rusting of iron and conditions needed

Physical or Chemical?: 5 questions
Rusting and Observations: 5 questions