Elements And Compounds Flashcards
1
Q
Definition of an atom
A
A tiny particle
2
Q
Definition of an element
A
A substance that contains atoms that are all the same
3
Q
The periodic table meaning
A
A table to show elements
4
Q
What is water made out of?
A
H20 + Oxygen
5
Q
Definition of a symbol
A
A simple way of representing an element
6
Q
Definition of a compound
A
Made up of 2 or more elements chemically joined
7
Q
Properties of a chemical change
A
- New substance(s) are made
- Not easy to get back what you started with.
8
Q
Properties of a physical change
A
- No new substances are made
- Easy to get back what you started with
9
Q
Name an example of a chemical change:
A
- Baking a cake
- Burning toast
- Petrol burning
- Iron rusting
- Coal burning in the air
- making toffee from butter and sugar
- Striking a match
10
Q
Name an example of a physical change:
A
- Making ice cubes
- Dissolving sugar in water
- Breaking a glass bottle
- Wool being knitted into a jumper
- Ice melting
- Candle wax melting
- Wet hair drying
