07/07/2020 - TUESDAY
TOPIC TAUGHT (TODAY)
CHAPTER - 3 - MATTER: SOLIDS, LIQUIDS AND GASES
- TEXTBOOK EXERCISE QUESTION ANSWERS DONE IN NOTEBOOK.
NOTEBOOK WORK:
Q4. Answer the following questions:-
Qa. Give two examples of solids.
Ans a. Bottle, pencil, wood, plate etc.
Qb. What happens to water when it is cooled?
Ans b. Water freezes into ice.
Qc. What is air?
Ans c. Air is a mixture of gases.
Qd. Define the term matter.
Ans d. Matter is anything that has mass and occupies space.
WORKBOOK
1. Name the following:
a) The state of matter to which paper belongs.
Ans. Solid.
b) A substance that may occur in all the three states of matter.
Ans. Water.
2. State whether the following statements are true or false.
a) Gases are all around us.
Ans. True.
b) A chair is an example of a gas.
Ans. False.
c) Air occupies space.
Ans. True.
3. Fill in the blanks.
a) Air is an example of a gas. (Air/ Milk)
b) Water covers 70% of the earth’s surface. (90%/70%)
4. Define the following terms.
a) Freezing
Ans. The process of conversion of a liquid into a solid is known as freezing.
b) Mass
Ans. Mass is the amount of matter that makes up an object.
5. Give reasons for the following statements.
a) Solids cannot be poured into containers.
Ans. Solids have a fixed shape. They do not flow and hence cannot be poured into containers.
b) Oil takes the shape of the container in which it is poured.
Ans. Oil is a liquid and liquids do not have a definite shape. They take the shape of the container in which they are poured.
7. Observe the given figure and answer the following questions:
a) Name the state of the substance present inside the kettle.
Ans. Liquid
b) Name the state of the substance that is given out from the kettle.
Ans. Gas
c) What may happen if we cool the steam?
Ans. It will turn into water droplets
9. Higher Order Thinking Skills (HOTS)
Air cannot be seen. Why is it still considered as matter?
Ans. Air is a mixture of gases. Though air is invisible, it has mass and it occupies space. Hence air is considered as matter.
NOTE : REFER THE FOLLOWING LINK
https://youtu.be/v12xG80KcZw
NOTE 1:
- COMPLETE THE NOTEBOOK WORK OF THE FOLLOWING CHAPTERS.
- CH- M1 - FOOD AND HEALTH
- CH- 2 - SOIL
- CH- 5 - PLANT WORLD
- CH- 9 - CREEPY CRAWLIES
- CH- 4 - LIVING THINGS
- CH- 3 - MATTER: SOLIDS, LIQUIDS AND GASES
- COMPLETE THE WORKBOOK OF THE ABOVE CHAPTERS AND KINDLY UPLOAD ON THE BETWEENUS PORTAL.
HOMEWORK:
- COMPLETE THE NOTEBOOK WORK
- KWL CHART
- NEW WORDS
- Q 4 ( in NB from Text book )
- COMPLETE THE WORKBOOK OF CH - 3- MATTERS: SOLIDS, LIQUIDS AND GASES
- LINK TO REFER ( ON THE ARRANGEMENTS OF THE MOLECULES OF SOLIDS, LIQUIDS AND GASES)
https://youtu.be/3S-x18UGwDM
