Chemical Reactions Flashcards
0
Q
How can u tell
A
Colour changes or if gas is given off
1
Q
What are they
A
A reaction where a new substance is formed
2
Q
What energy is used
A
Heat mostly
Electricity
3
Q
Reversible or irreversible
A
Irreversible
4
Q
Precipitation reaction
A
When u mix two liquids and form a solid
5
Q
Starting chemicals
A
Reactants
6
Q
New substance
A
Products
7
Q
Ending of new substance is
A
…..ide
8
Q
Iron+sulphur->
A
Iron sulphide
This is a yellows gas