MATERIALS
Fill in the blanks:
1. ____________________has no fixed shape and can flow.
2. ________________ particles moves very little.
3. ________________ has a fixed shape and cannot be squashed.
4. _________________ particles are quite close to each other.
5. _________________ particles are very close to each other.
6. All matter are made of ______________________.
7. _____________________ have a fixed ____________________due to
their______________________ packed __________________ which
______________________ in a ______________ position.
8. __________________ can ____________________ and take on the
_____________________ of their container.
9. Solids have a fixed shape because of _____________________________
10. Liquids can change shape in some ways because of _________________
11. Particles in a _____________________ are close together, but they can
____________________ past each other and change places. Because of this
liquids can change ___________________ easily.
12. Particles in a solid are packed ___________________ together in fixed
_________________. They cannot change _______________ easily.
13. _______________ and ______________ are different states of materials and
substances.
14. Objects can be made of different ______________________.
15. Most materials are mixtures of different ____________________.
16. A __________________ is a pure type of solid, liquid or gas.
17. All materials are made of ________________.
18. All matter is made of ____________________.
19. ____________________ is an example of solid substance.
20. ______________________ is an example of liquid substance.
21. ___________________ is an example of gas substance.
22. A _________________ describes what a substance or material is like, or how it
behaves.
23. Solids and liquids have ____________________ properties.
24. Some solids such a sand, flour, salt and sugar are sometimes called as
_______________________.
25. __________________ are made of lots of tiny pieces or grains.
26. Solidifying is also called as _____________________.
27. _____________ is a powdery material left when wood is burnt.
28. ____________________ is water which has no salts dissolved in it.
29. A _______________ is a reddish-brown powder that forms on some metals.
30. When materials and substances change from one form to another when they
are heated or cooled is called as a _________________________________.
31. ______________ refers to the amount of matter in an object.
32. Mass is typically measured in units such as _________________ or
__________________.
33. Mass is measured using various instruments, including _____________ and
____________.
34. ____________ is a fundamental property of an object and remains the same
regardless of the object’s ______________.
35. _______________is the three dimensional space occupied by an object or
substance.
36. Volume is measured in units such as ___________________ and
________________.
37. The regular shaped objects can be determined using mathematical ________.
38. The volume of a cube is calculated by multiplying the _____________,
____________, and ______________.
39. _________________ is the process where water vapour changes to liquid.
40. _________________ is the process where water changes to steam or water
vapour.
41. A measuring cylinder or a __________________ is used to measure the
amount of liquids.
42. Matter is anything that has ____________ and occupies space.
43. The amount of space occupied by matter is called ______________________.
44. Volume can be measured in __________________________,
__________________, _____________________ and ___________________.
45. When paper burns to become ash, the change is ____________________.
46. When plastic burns, a new _____________________ is formed.
47. ____________________ is a process by which a solid changes into liquid.
48. Liquid wax is in a different _________________ from solid wax.
49. __________________ is a process by which a liquid changes into a solid.
50. The ______________________________ explains how particles act when
their spacing and movements change.
51. Heating causes ___________________.
52. Cooling / freezing causes ____________________.
53. Burning wood is a ___________________ reaction.
54. _______________ is a chemical reaction.
55. Melting is a _______________process because the liquid formed can be
changed into a solid by _________________.
56. Solidifying is the opposite of __________________.
57. _________________ is the process by which solid converts to gas directly.
58. ________________ is the process by which gas converts to solid directly.
59. ___________________ is the temperature at which a solid melts.
60. Melting point of ice is ____________.
61. Boiling point of water is __________.
Say true or false:
1. Particles move all the time.
2. Particle model of matter describes the differences between solids, liquids and
gases.
3. Materials are not made from particles.
4. There are always space between particles.
5. Particles in liquids can slide past one another.
6. Particles in solids cannot move.
7. All substances are made from particles.
8. Some solids can behave like liquids.
9. Liquid substances solidify when they lose heat.
10. Rusting is a chemical reaction.
11. New substances are formed in chemical reaction.
12. The shape of a solid changes on its own.
13. Rocks are the liquid form of matter.
14. Gas has neither shape nor volume.
15. Matter is something that has mass and occupies space.
16. There are 4 states of matter.
Name the state of matter:
1. It will mould its shape to the container. ________________
2. It will spread on a flat surface. __________________
3. It will hold its shape unless broken. _________________
4. It does not flow. ________________
5. It can be compressed. ____________________
6. It cannot be rigid. ___________________
Name if it is a physical or chemical process:
1. Making an omelette. _____________________
2. Melting a chocolate. ___________________
3. Burning wood. ____________________
4. Tearing paper. ________________
5. Squeezing clay. ________________
6. Mixing baking soda and vinegar. __________________
Finish the sentence:
1. Water becomes solid when it ______________________.
2. Frozen water is a _______________________.
3. Pure water is a ____________________.
4. Evaporated water is a _________________.
5. The three states of water is _________________________________.
Q n A:
6. Why does some solids like flour and salt behave like liquids?
Flour and salt is made of lots of very tiny grains. There is air space between the grains
so they have space to move into. This lets the grains of the flour to slide past each
other like a liquid.
7. What is a permanent change in a chemical reaction?
When a change cannot be reversed to its original state it is called as a permanent
change in chemical reaction. Ex: burning paper turns it into ashes.
8. What is a temporary change in a chemical reaction?
When a change can be reversed to its original state it is called as a temporary change
in chemical reaction. Ex: melting ice cubes.
9. What is condensation?
Condensation is the process by which water vapour or gas turns into liquid by losing
heat energy.
10. What is evaporation?
Evaporation is the
process by which liquid converts into water vapour or gas by absorbing heat energy.
11. What is sublimation?
Sublimation is the process by which solid converts to gas directly. Ex: dry ice converts
to gas.
12. What is deposition?
Deposition is the
process by which gas converts to solid directly. Ex: water vapour changes to frost.
13. What is precipitation?
Precipitation is the process by which condensed liquid in the atmosphere falls down
in the form of rain, snow, etc.
14. What is boiling point?
The temperature at which the liquid boils and turns into vapour is called as boiling
point. The boiling point of water is 100 degree Celsius.