Grade 8 Science: Classification and Changes
This worksheet covers classification of matter, physical and chemical changes, and states of matter for Grade 8 science.
Includes
Standards
Topics
Classification and Changes in Matter
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Read each question carefully and provide your best answer. This worksheet will assess your understanding of matter, its classification, and the changes it undergoes.
1. Which of the following is an example of a chemical change?
Melting ice into water
Dissolving sugar in water
Burning wood to ash
Cutting paper into pieces
2. Which state of matter has a definite volume but no definite shape?
Solid
Liquid
Gas
Plasma
3. A substance that cannot be broken down into simpler substances by chemical means is called an .
4. When a gas turns directly into a solid, the process is called .
5. The law of conservation of states that matter cannot be created or destroyed.
6. Explain the difference between a physical change and a chemical change, providing an example for each.
7. Describe the arrangement and movement of particles in a solid, liquid, and gas.
8. Observe the diagram below showing the transitions between states of matter. Label each arrow with the correct term for the phase change (e.g., melting, freezing, evaporation).
Solid to Liquid:
Liquid to Gas:
Liquid to Solid:
Gas to Liquid:
Solid to Gas:
Gas to Solid:
9. A mixture is a substance that is chemically combined.
True
False
10. Rusting of iron is an example of a physical change.
True
False