Question

Give a reason to support your answer.
d. Why is evaporation considered as a physical and an endothermic change? Explain.
State any three ways to
eventing rusting.​

Answer 1

Answer:

1) Evaporation is an endothermic reaction because the liquid molecules must absorb heat in order to transform into gas molecules.

2) Write two ways to prevent rusting of iron.

Paint it - Paint the metal with any durable acrylic paint. Do not use Water-Soluble paints, since they will only worsen the rust.

Keep moisture at Bay - Avoid contact with water or moisture.

Coat it with Oil - Use of oil or grease significantly reduces the chances of developing rust in iron.

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