e-test (Matter and materials)

1. States of matter (10 p)

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Answer the following questions.

1. When a solid becomes a liquid, the process is called







2. When a liquid becomes a gas, the process is called







3. When a gas becomes a liquid, the process is known as







4. When a liquid becomes a solid, the process is known as







5. How do the molecules of liquid matter behave?







6. How do the molecules of gaseous matter behave?







7. How do the molecules of solid matter behave?







8. Which of the following temperatures is the melting point of iron?







9. Which of the following temperatures is the melting point of mercury?







10. Which of the following is the freezing point of water?





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2. Qualities of water (10 p)

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How do water molecules behave at different states?
solid (ice)


liquid (water)


gas (vapor)


Why is water not an element?

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3. Materials (10 p)

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1. Why is wood used in saunas?







2. What is the most common raw material used in paper?







3. What types of materials can be used to make paper?







4. Which animal can also produce paper?







5. Which of the following animals does not produce wool?







6. Crude oil and natural gas have been formed







7. Coal has been formed







8. What is the characteristic feature of plastics?







9. Which plastic is used to make plastic bags?







10. Which of the following substances is used as a raw material in concrete?





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