Question

Burning of candle. A)smallest possible unit of matter

2) Conversion of solid into gas b)source of water

3) Atom. C) mixture

4) Gases d)Sublimation

5) Rainwater e) chemical change match the calum​

Answer 1

Explanation:

Rusting of iron, combustion and burning of the candle are chemical changes where produced cannot be converted into reactants.

Answer 2

Chemistry is the branch of science that deals with the properties, composition, and structure of elements and compounds, how they can change, and the energy that is released or absorbed when they change.

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