States Of Matter

Question 1

Identify the 3 states of matter. State one property for each.

Answer 1

Solid

• same size and shape regardless of container
• difficult to compress

Liquid
- fixed size, takes shape of container

Gas
- no fixed size, takes shape of container

Question 2

Define diffusion

Answer 2

The process of gas particles moving around, taking up all available space.

Question 3

Explain the particle model of matter

Answer 3

The model states that all matter is made of particles which are constantly moving, and are in one of 3 states

Question 4

Distinguish between expansion and contraction

Answer 4

When a substance is heated, the particles move faster, becoming further apart and taking up more space, expanding. Contraction is when particles are cooked down, slowing an reding less space, becoming more attracted to each other.

Question 5

Identify where expanding substances are useful

Answer 5

Mercury in thermometers is useful for telling temperature

Question 6

What is matter?

Answer 6

Matter is anything that has mass or takes up space