Chemical Reactions Flashcards
1
Q
Define the subscript (s)
A
Solid
Indicates that the substance is in a solid state
2
Q
Define the subscript (l)
A
Liquid
Indicates that the substance is in a liquid state
3
Q
Define the subscript (g)
A
Gas
Indicates that the substance is in a gaseous state
4
Q
Define the subscript (aq)
A
Aqueous solution
Indicates that the substance has been dissolved in water
5
Q
Define reactant
A
The substance which undergoes change during a reaction.
6
Q
Define product
A
The species formed from chemical reactions
7
Q
Identify the [6] signs of a chemical reaction
A
- Precipitate forms or a substance is consumed
- Gas produced/evolved
- Colour change
- Change in smell
- Energy input or release (temperature change or light given off)
- Difficult to reverse
8
Q
Define precipitate
A
A solid formed by a change in a solution
(aq) + (aq) → (aq) + (s)
9
Q
Define spectator ion
A
Ions which remain the same and do not take part in the chemical reaction
