1What are the three most common 'states of matter'?
Solid, liquid and gas
2What is the 4th state of matter?
Plasma
3What is the name for an area containing no particles at all?
A vacuum
4If a substance is a gas at room temperature, what type of substance is it?
Molecular
5How are molecules arranged in a gas?
Moving quickly and using as much space as possible
6Can a gas be compressed?
Yes
7How are atoms arranged in a solid giant substance?
Close together, in fixed positions and in a regular pattern
8What will happen if you heat up a solid?
It will melt
9What happens to the chemical bonds when a giant substance is heated up?
They are broken
10How are atoms arranged in a liquid giant substance?
They are no longer bonded to other atoms but still touching each other
11How are atoms arranged in a gaseous giant substance?
They are separate from each other
12How are molecules arranged in a molecular gas?
They are far away from each other
13How are molecules arranged in a molecular liquid?
They are touching each other
14What are forces between molecules called?
Intermolecular forces
15How are molecules arranged in a molecular solid?
The molecules are held in place in a repeating pattern
16What does RTP stand for?
Room temperature and pressure
17What is room temperature?
25ºC
18What is needed to change a solid into a liquid?
Energy
19What is the temperature at which a solid turns into a liquid called?
Melting point
20What is the shorthand for melting point?
mpt
21Will molecular substances have high or low melting points?
Low
22Will giant substances have high or low melting points?
High
23What happens when a liquid is allowed to cool down below its melting point?
It freezes
24What happens to the temperature of the surroundings when a solid melts?
It drops
25What is the melting point of water?
0ºC
26What is it called when a liquid turns to a solid?
Freezing
27What happens to the temperature of the surroundings when a liquid turns into a solid?
It increases
28What happens when we heat a liquid up?
It boils
29What is the boiling point of water?
100ºC
30What is the change of state from liquid to gas called?
evaporation
31What is the change from gas to liquid called?
condensing
32What is the temperature where a liquid turns into a gas called?
Boiling point
33What is the temperature where a gas condenses to a liquid called?
Boiling point
34What is shorthand for boiling point?
bpt
35What happens to the temperature of the surroundings when a liquid boils?
It decreases
36What happens to the temperature of the surroundings when a gas condenses?
It increases
37What is temperature a measure of?
Average energy of molecules
38What is the main difference between a solid, liquid and a gas?
The amount of internal energy that the molecules or atoms have
39What is sublimation?
The change from a solid to a gas