Question

Differentiate between physical and chemical change with an example of each. [3 MARKS]

Answer 1

Four differences : 0.5 Mark each
Example : 0.5 Mark for each

$$\begin{array}{cc}\text{Physical Change}& \text{Chemical Change}\\ \text{The chemical composition of a substance}& \text{The chemical composition of a substance}\\ \text{does not change.}& \text{changes.}\\ \text{Most changes are reversible}& \text{Most changes are irreversible.}\\ \text{No new substances are formed. For example,}& \text{New substances are formed. For example,}\\ \text{Ice}\to \text{Water}\to \text{Steam}& \text{Paper}\to \text{Ashes}\end{array}$$