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
1
2
2
1
0
4
1
1
0
13
4
2
4
10
3
1
2
2
7
4
1
1
1
2
