Chemical Changes Flashcards
1
Q
What is H₂SO₄?
A
Sulphuric acid
2
Q
What is HCl?
A
Hydrochloric acid
3
Q
What is HNO₃?
A
Nitric acid
4
Q
What colour does methyl orange turn when in an acid?
A
Red
5
Q
What colour does methyl orange turn when in an alkali?
A
Yellow
6
Q
What colour does phenolphthalein turn when in an acid?
A
Colourless
7
Q
What colour does phenolphthalein turn when in an alkali?
A
Pink
8
Q
What happens if a solution has more hydrogen ions ?
A
It is more acidic; has a lower pH
9
Q
Solute
A
a substance that dissolves in a liquid
10
Q
Solvent
A
the liquid that the solute dissolves in
11
Q
Solution
A
formed when a solute dissolves in a solvent
12
Q
metal + acid ——>
A
salt + hydrogen
13
Q
metal oxide + acid —–>
A
salt + water
14
Q
metal hydroxide + acid —->
A
salt + water
15
Q
metal carbonate + acid ——>
A
salt + water + carbon dioxide
