5
2Keywords:
acid-base reactions
acids
changes
indicators
neutralisation
pH scale
Explain how to test if a solution is an acid or not, and describe and explain what happens if rusty nails are put in an acid. Assessment focus: acid reactions.
2
6
4
3
3
5
3
1
1
22
2
1
6
1
3
0
2
3
5
3
3
8
3
3
0
