Physcial And Chemical Changes Flashcards
1
Q
What’s the difference between a chemical and physical change
A
A chemical change rearranges 1 or more atoms of molecules and is irreversible
A physical change doesn’t change or rearrange atoms of molecules and is reversible
2
Q
Whats an example of sublimation
A
From a solid to a gas
Dry ice to CO2
3
Q
What’s an example of melting
A
From a solid to a liquid
Ice to water
4
Q
What’s an example of evaporation
A
Liquid to a gas
Water to steam
5
Q
What’s an example of condensation
A
A gas to a liquid
Steam to water vapour
6
Q
What’s an example of freezing
A
Liquid to a solid
Water to ice
7
Q
What information is given in a chemical equation
A
It tells you what substances are involved and how many is required for it to be balanced
