Topics Included: • Materials • How materials are made • What is matter made up of • Why things are grouped • Classification and its requirement • Properties of Materials

1. SORTING MATERIALS
INTO GROUPS

2. We see many things around us.

3. What these things are made of?
Graphite
Wood
Paint

4. Materials
Wood, graphite, paint, paper, glue,
rubber etc. are called materials.
Materials make different kind of
things.

5. How materials are alike
1 •All materials occupy space
2 •All materials have mass

6. All materials are made up
of matter
Anything that occupies space and has
mass is matter.
Then what is not matter?

7. What is matter made up of?

8. Pure Gold is made up of Gold atoms.
Pure Iron is made up of Iron atoms.
Pure Water is made up of atoms of
Hydrogen and Oxygen.

9. I l o v e S c i e n c e
Atom
H
Molecule
H H
O
O
O
Compound

10. Molecule of two or more atoms may
have entirely different property
H
O
H H
O
Hydrogen is a fuel
Oxygen helps in
burning
Water is a fire
extinguisher

11. Molecule of two or more atoms may
have entirely different property
Na
Cl
Sodium explodes when
it comes in contact with
water
Chlorine is a poisonous
gas
Sodium Chloride
is common salt
that we use in our
food
Na Cl

12. Why things are grouped
General Store Library

13. Classification
Grouping together
things which has
similar properties is
called classification
Things
Living
Things
Plants Man
made
Animals
Natural
Non-Living
Things

14. Why classification is required
Cloth
Wood
Metal

15. Properties of materials
Size
Smell
Colour
Shape

16. Appearance
Paper Cloth

17. Lustre
Wooden spoon Metal spoon

18. Texture
Metal Wool

19. Hardness
Metal Cotton

20. State
Solid Gas
Liquid

21. Transparency

22. Quiz time

23. Thank you