CHEMISTRY
States of Matter
1. Complete the sentences below:
There are three states of mater - (a) ................... (b) ...................... and (c) ...................
The particles in a solid are packed ..................... together. The particles are fixed in
position, but they do ................... The particles in a ..................... can move around, but
there is still very little ..................... between them. In a gas, particles move around very
.................. There are large .................... between particles.
When particles get closer together, for example when a gas c...................., energy is given
out. On the other hand, we need to supply ................ to increase the distance between
particles. An example is when a solid ...........................
2. (a) What do we call these changes:
(i) Solid Liquid
(ii) Liquid Gas
(iii) Gas Liquid
(iv) Liquid Solid
(b) Which of the changes in (a) require us to provide energy, and which give out
energy?
3. Describe the movement of the particles on a solid substance as it is heated to its boiling
point.
4. Look at this cooling curve for substance X as it turns from a liquid to a solid.
(a) What is the freezing point of X?
(b) What is the melting point of X?
(c) What was the room temperature that day?
5. What is matter?
a. Matter is anything that flies.
b. Matter is anything that occupies space.
c. Matter is anything that has definite shape.
6. What are the basic building blocks of matter?
a. particles
b. atoms
c. compounds
7. What is the state of matter that has no fixed shape and no fixed volume?
a. solid
b. liquid
d. gas
8. What is the common property of solid, liquid and gas?
a. They are all living things.
b. They have definite shape.
c. They have the same mass.
9. How do you call the change in a state of matter from a gas to a liquid?
a. evaporation
b. condensation
c. freezing
10. Maria filled her glass with when she put ice into the basin, the water level rose. Why?
a. The ice was too big.
b. The ice took up some space in the basin.
c. The water expanded due to low temperature.
11. Categorize the following items as solid, liquid or gas.
pencil water soda nitrogen ice cream
shampoo steam table wallet car
12. Draw a diagram to represent 8 particles in each state of matter.
SOLID LIQUID GAS
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