Answers CR Chemistry S1 Q3050OX Lab: Physical and Chemical ChangesQuestion 1

1

AssignmentMultiple Select

Lab: Physical and Chemical Changes

Question 1 • *CR Chemistry S1 [Q3050OX]

Which reactions performed in the experiment involved chemical changes?

Answer

A

crushing calcium carbonate

B

mixing calcium carbonate and HCl

C

boiling water

D

heating copper (II) sulfate pentahydrate

E

separating iron filing and sulfur

F

mixing potassium iodide and lead nitrate

G

combining magnesium and HCl

H

burning the candle

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