Grade 6 End-of-Term 2 Unit 1: Test Paper 4

Subject: Science

Topic:    Changes in the States of Matter and Types of Changes:

Read each question carefully before answering using complete sentences where necessary.

Section A – Multiple Choice

1. What is the process called when a solid becomes a liquid?

a) Melting           b) Freezing         c) Condensation              d) Sublimation

2. What is the process called when a liquid becomes a gas?

a) Evaporation       b) Condensation          c) Sublimation                 d) Melting

3. What is the process called when a gas becomes a liquid?

a) Condensation              b) Sublimation                 c) Evaporation                  d) Freezing

4. What is the process called when a gas becomes a solid?

a) Sublimation                 b) Freezing                        c) Evaporation                  d) Melting

5. What is the process called when a solid becomes a gas?

a) Sublimation                  b) Melting                c) Freezing                  d) Condensation

Section B – Fill in the Blanks.

6. A change of state from a solid to a liquid is called __________.
7. A change of state from a liquid to a gas is called __________.
8. A change of state from a gas to a liquid is called __________.
9. A change of state from a gas to a solid is called __________.
10. A change of state from a solid to a gas is called __________.

Or

Matter can undergo different types of changes. Changes in the __________ of matter can be classified as physical changes or chemical changes. A ______________ change is a change in the state of matter, such as the change from a solid to a liquid, which is called ___________. A chemical change, on the other hand, is a change in the composition of matter, such as the reaction between baking soda and vinegar, which produces carbon dioxide gas. In addition to physical and chemical changes, changes in the state of matter can also be classified as reversible or irreversible changes. A __________ change is a change that can be undone, such as melting an ice cube to form water, which can be frozen again to form ice. An __________ change is a change that cannot be undone, such as burning a piece of paper, which is a chemical change that irreversibly alters the composition of the paper.

Section C – Short Answer

11. What is the difference between a physical change and a chemical change?
12. Give an example of a physical change.
13. Give an example of a chemical change.
14. What is a reversible change?
15. What is an irreversible change?

Section D – Essay

16. Discuss the different types of changes that can occur in the states of matter, and provide examples of each.
17. Describe the different factors that can affect changes in the states of matter and explain how they impact these changes.
18. Explain the importance of understanding the different types of changes that can occur in the states of matter and provide examples of how this understanding can be applied in everyday life.

I hope this helps you create an end-of-term exam paper for Grade 6 on the topic of Changes in the States of Matter and Types of Changes! Good luck!

Please also see exam papers on the following topics:

Materials – Properties and their Uses, Reversible and Irreversbile Change, States of Matter,

Human Body Sytems