Which process involves a chemical change?

adding sodium chloride to water

adding magnesium to hydrochloric acid

heating solid iodine until it turns into a gas

melting lead

Chemistry

IGCSE&ALevel

CAIE

Exam No：0620_w24_qp_12 Year：2024 Question No：15

Answer:

6.1.1. Identify physical and chemical changes, and describe the differences between them

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