Elements, Compounds and Mixtures Flashcards
1
Q
What is the most common element in the air?
A
Nitrogen, 78%
2
Q
What do atoms in gasses often go round in?
A
Pairs
3
Q
Compound
A
A substance that is made of two or more different elements which are chemically joined together
4
Q
Compounds are…
A
Chemically bonded
5
Q
Mixtures are…
A
Easily separated
6
Q
Elements consist of…
A
One type of atom only
7
Q
Filtration
A
Used to separate an insoluble solid from a liquid
8
Q
How to filter something
A
- Filter paper folded into a cone shape
- Solid is left in the filter paper
- Rest goes into the beaker
9
Q
Crystallisation
A
Used to separate a soluble solid from a solution