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

Posted byElorinePosted inscienceTags:

Subject: Science

Topic: Reversible and Irreversible Changes:

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

Section A – Multiple Choice
  1. Which of the following is an example of a reversible change?

a) Burning wood                b) Cooking an egg                 c) Rusting of iron            d) Baking a cake

  1. Which of the following is an example of an irreversible change?

a) Melting of ice         b) Boiling water          c) Souring of milk          d) Dissolving sugar in water

  1. Which of the following is a physical change?

a) Burning of wood      b) Rusting of iron        c) Dissolving salt in water       d) Digestion of food

  1. Which of the following is a chemical change?

a) Melting of ice          b) Boiling water        c) Digestion of food        d) Breaking glass

  1. Which of the following is an example of a reversible change of state?

a) Freezing of water          b) Burning of wood         c) Breaking glass         d) Cutting paper

Section B – Fill in the Blanks
  1. A change that cannot be undone is called an ________ change.
  2. A change in which new substances are formed is called a ________ change.
  3. The process of water turning into ice is an example of a ________ change.
  4. The process of water evaporating to form water vapor is an example of a ________ change.
  5. The process of dissolving salt in water is an example of a ________ change.
Section C – Short Answer
  1. What is the difference between a physical change and a chemical change?
  2. What is a change of state? Give an example.
  3. Explain the process of melting.
  4. Explain the process of combustion.
  5. Give an example of a reversible change that occurs in nature.
Section D – Essay
  1. Discuss the importance of understanding reversible and irreversible changes in our daily lives. Provide examples of reversible and irreversible changes that we encounter.
  2. Explain how heat energy can cause reversible and irreversible changes. Provide examples of each.
  3. Discuss the role of chemical reactions in reversible and irreversible changes. Provide examples of chemical reactions that result in reversible and irreversible changes.

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

Please also see exam/test papers on the following topics:

Materials – Properties and their Uses, States of Matter, Human Body Sytems

Published by Elorine

Dedicated Early Childhood and Primary Educator, who strive to empower students to be creative self-directed learners, using education to ignite the fire within themselves and others. Experience in establishing and fostering friendly, understanding agreement between students, parents and teachers that matures into prosperous lasting relationships. Acknowledging God; as the fountain and source of all knowledge.