Step
Material
Change(s) Observed
Type of Change
(Physical/Chemical)
Reasoni...
Step
Material
Change(s) Observed
Type of Change
(Physical/Chemical)
Reasoning
2
Calcium carbonate
3
Calcium carbonate
and hydrochloric
acid
4
Water
5
Copper sulfate
pentahydrate
6
Iron filings
and sulfur
7
Lead nitrate and
potassium iodide
8
Magnesium and
hydrochloric acid
9
Candle
Answers: 3
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