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Unit 5 Matter Date:

Name:

1. What are the two general properties of matter and how are they measured?

2. Match the three columns. Water • Carbon dioxide • Glass •

• • •

Solids Liquids Gases

• • •

• Keep its shape and volume. • Keep its volume but not its shape. • Do not keep its shape or volume.

3. Look at the arrows. Write the name of the changes they represent.

Solid

Liquid

Gas

4. Complete the text. • substance. water and

cannot be separated into other substances. is a pure are made of two or more substances. Seawater is a mixture of .

5. Write if the sentences are true or false. Then correct the false sentences. a) Combustion is when the oxygen in the air and water come into contact with iron. b) When there is a chemical change, matter changes its composition. c) Combustion is a very slow process of oxidation.

KEY SCIENCE 5 PHOTOCOPIABLE MATERIAL

16

evaluation worksheets

Unit 5 Matter Date:

Name:

6. Name three types of chemical changes.

7. After burning paper or wood, the remaining ash weighs less than the original matter. Has some of its mass disappeared? Explain what has happened.

8. Circle the correct answer. a) Iron undergoes this process when it comes into contact with oxygen. Melting / Oxidation b) The chemical change gasoline undergoes when it rapidly comes into contact with oxygen Combustion / Evaporation c) Living things help create this chemical process in the absence of oxygen. Oxidation / Fermentation

9. Look at the pictures. Write which one is a pure substance, a homogenous mixture and a heterogeneous mixture. a

b

c

10. Give an example of a food product that we make by using fermentation. Then explain this chemical process.

KEY SCIENCE 5 PHOTOCOPIABLE MATERIAL

17

evaluation worksheets