1.
Now that you have skimmed through the module and have a general idea of what it is about, it is time to read it in more detail. Each question in Part 2 contains one or more sentences from the which have missing words. Read the module in more detail to find the missing words.
2.
This part of your homework will check your understanding of the module.
3.
Look at Figure 2.2.4 on pg 54. What do you think this diagram tells you about solids.
4.
Look at Figure 2.2.5 on pg 54. What do you think this diagram tells you about liquids?
5.
In this part of the homework you are required to write full sentence answers to the questions.
6.
For each of the pictures shown below state if it represents a solid, liquid or gas. Also give an explanation for your choice.
7.
Look at Figure 2.2.6 on pg 55. What do you think this diagram tells you about gases?
8.
Your Science text book contains a lot of detailed information. If you try to absorb all of the information in one go you can easily get lost or confused. We recommend that you skim the text first. One way to do this is to look at the pictures and diagrams before reading the chapter in detail. This gives you some clues about what the information text contains. You then look at the detail later.
9.
Which of the following ideas are used in the particle model?
A. 
All substances are made up of tiny, hard particles that are too small to see.
B. 
All substances are made up of large, soft particles similar to marshmallows.
C. 
The particles of substances do not move because they have no energy.
D. 
The particles of substances always have energy and are moving (even if it is a very small amount).
E. 
The particles of substances move about more and move faster as temperature is increased
F. 
The particles of substances move about less and move slower as temperature is increased
G. 
The closer the particles are to one another, the stronger the attraction between them.
H. 
The closer the particles are to one another, the weaker the attraction between them.
10.
The particles in a solid have energy and [Blank] about as shown in Figure 2.2.4. The particles don't break out of position but just [Blank] about on the spot.
11.
If you increase the temperature, this gives the particles more [Blank] and so they [Blank] more.
12.
Explaining solids
The particles in solids are closely packed in [Blank] positions. Forces between neighbouring particles form bonds that [Blank] all the particles in the solid closely together.
13.
Explaining liquids
In a liquid, the particles are still packed closely together but they are far more [Blank] [Blank] (joined) to their neighbours than the particles are in a solid. The loose bonding allows the particles to [Blank] about and over each other, allowing the liquid to [Blank], drip and fill the bottom of whatever [Blank] it is in.
14.
If a particle has lots of [Blank], then it will move about a lot. If the particle has very little energy, then it will move about only a [Blank] bit.
15.
You add energy to matter whenever you [Blank] it, as heat is a type of [Blank].
16.
As the liquid is [Blank], this movement gets [Blank].
17.
Explaining gases
The particles of gases are spread far [Blank] and have [Blank] holding their particles together.
18.
This lack of bond between particles allows them to move [Blank] and in straight lines until they [Blank] something. The particles could hit other gas [Blank] or the [Blank] of the container they are in.
19.
The Particle Model (Page 53)
In the particle model, all substances are thought to be made of incredibly small, hard [Blank] called particles. Each ball has energy and [Blank] according to how much [Blank] it has.
20.
The more you [Blank] a substance, the more energy the particles get and the [Blank] they move. If you [Blank] a substance, then the reverse happens: the particles move about [Blank] and move more slowly.