Indicate whether the following changes are physical or chemical lol,
Explain:
melting candle wax
burning candle wax
tearing paper
burning paper
dissolving NaCl
mixing NaCl and AgNO3
cutting Mg ribbon
adding HCl to Mg
grinding CuSO4 * 5H2O
heating CuSO4 * 5H2O
mixing Fe and S
heating Fe and S
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Verified answer
1=physical
2=chemical
3=physical
4=chemical
5=physical i THINK
6=chemical i THINK
7=physical
8= i don't know, does this produce a chemical rxn?
9=physical
10=chemical
11=physical i think
12=chemical i think