phases of matter Flashcards
1
Q
describe 3 characteristics of a solid
A
- have a solid form
- are hard
- have a high density
2
Q
describe 3 characteristics of a liquid
A
- do not have a fixed form
- are not hard
- have a high density
3
Q
describe 3 characteristics of a gas
A
- do not have a fixed form
- are not hard
- have a low density
4
Q
how do we know a substance is a solid
A
when the melting point is higher than the room temperature
5
Q
how do we know that a substance is a liquid
A
when the boiling point is higher than room temp but the room temp is higher than the melting point
6
Q
how do we know when a substance is a gas
A
when the room temp is higher than the boiling point
7
Q
____ stays constant during ______
A
temperature
phase changes
