Usborne What is Chemistry - Pages 14-20

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Quiz on states of matter and gases

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Usborne What is Chemistry - Pages 14-20


Usborne What is Chemistry - Pages 14-20Versión en línea Quiz on states of matter and gases por Vijo Gor 1 1. Substances can exist in how many different states? a Two states b Five states c Four states d Three states 2 2. Which three states can most substances exist in? a Solid, steam, air b Hard, soft, gas c Solid, liquid, gas d Liquid, steam, fog 3 3. What determines whether water is ice, liquid water, or steam? a The colour of the water b The container it is in c Air pressure d The temperature 4 4. What are atoms and molecules constantly doing? a Sleeping b Staying completely still c Fidgeting and moving around d Growing larger 5 5. When molecules are cold, what do they usually form? a A gas b A solid c A liquid d A flame 6 6. What happens to molecules when they get warmer? a They disappear b They move away from each other c They shrink d They freeze 7 7. What is air made up of? a Water vapour only b Atoms and molecules of different gases c Only oxygen d Only nitrogen 8 8. What causes air pressure? a Water turning to steam b Molecules rushing around and bashing into things c Air becoming cold d Clouds forming 9 9. Why don’t we usually notice air molecules hitting us? a Because they move slowly most of the time b Because they stop moving c Because they are invisible d Because air has no pressure 10 10. What happens to a gas when pressure is increased? a It disappears b It freezes immediately c It takes up less space d It becomes hotter 11 11. Who was one of the first scientists to study gases carefully? a Charles Darwin b Isaac Newton c Galileo Galilei d Robert Boyle 12 12. What did Boyle use to experiment with gases? a A microscope b A telescope c A pump and airtight container d A thermometer 13 13. What happened to the balloon when Boyle pumped air out of the glass bowl? a It shrank b It expanded c Nothing happened d It burst 14 14. What is air actually made of? a Pure nitrogen b One gas only c A mixture of different gases d Only oxygen and carbon dioxide 15 15. Which gas makes up about 78% of air? a Nitrogen b Oxygen c Hydrogen d Carbon dioxide 16 16. What are physical properties? a What a substance is like on its own b How dangerous a substance is c How heavy a substance is d What a substance is made of chemically 17 17. Which of the following is an example of a physical property? a How it reacts with acid b Its boiling point c How it explodes d How it burns 18 18. What are chemical properties? a What a substance looks like b What a substance can do when it reacts c What state it is in d What colour it is 19 19. What is it called when sugar mixes completely with water? a A suspension b A solution c A compound d A reaction 20 20. Why might sugar form a sticky layer at the bottom of cold tea? a Because sugar freezes b Because sugar drops out of solution as the tea cools c Because sugar becomes heavier d Because water evaporates

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Usborne What is Chemistry - Pages 14-20

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Usborne What is Chemistry - Pages 14-20Versión en línea

por Vijo Gor

1. Substances can exist in how many different states?

2. Which three states can most substances exist in?

3. What determines whether water is ice, liquid water, or steam?

4. What are atoms and molecules constantly doing?

5. When molecules are cold, what do they usually form?

6. What happens to molecules when they get warmer?

7. What is air made up of?

8. What causes air pressure?

9. Why don’t we usually notice air molecules hitting us?

10. What happens to a gas when pressure is increased?

11. Who was one of the first scientists to study gases carefully?

12. What did Boyle use to experiment with gases?

13. What happened to the balloon when Boyle pumped air out of the glass bowl?

14. What is air actually made of?

15. Which gas makes up about 78% of air?

16. What are physical properties?

17. Which of the following is an example of a physical property?

18. What are chemical properties?

19. What is it called when sugar mixes completely with water?

20. Why might sugar form a sticky layer at the bottom of cold tea?