ICSE Class 7 – Chemistry
Chapter: Matter and Its Composition
Worksheet: 50 × 1 Mark = 50 Marks
1. What is matter?
2. Name anything that has mass and occupies space.
3. Name the three states of matter.
4. Which state of matter has definite shape?
5. Which state of matter has definite volume but no definite shape?
6. Which state of matter has neither definite shape nor volume?
7. Name the smallest particle of matter.
8. What are atoms made of?
9. Name any one sub-atomic particle.
10. Which particle has a negative charge?
11. Which particle has a positive charge?
12. Which particle has no charge?
13. Where is the nucleus located?
14. Name the particle present outside the nucleus.
15. What is an element?
16. Name a substance made of only one kind of atom.
17. What is a compound?
18. Name a substance made of two or more elements chemically combined.
19. What is a mixture?
20. Name a substance formed by physical mixing.
21. Name one homogeneous mixture.
22. Name one heterogeneous mixture.
23. What is a solution?
24. Name the solvent in salt solution.
25. Name the solute in salt solution.
26. What is evaporation?
27. What is condensation?
28. Name the process of changing solid to liquid.
29. Name the process of changing liquid to gas.
30. Name one physical change.
31. Name one chemical change.
32. Is melting a physical or chemical change?
33. Is rusting a physical or chemical change?
34. Name the method used to separate sand and water.
35. Name the method used to separate salt from water.
36. What is filtration?
37. What is decantation?
38. Name the method used to separate immiscible liquids.
39. Name the method used to separate dyes in ink.
40. What is crystallization?
41. Name one property of solids.
42. Name one property of liquids.
43. Name one property of gases.
44. Do gases occupy space?
45. Name the state of matter of air.
46. Name one example of an element.
47. Name one example of a compound.
48. Name one example of a mixture.
49. What is meant by pure substance?
