Question

which of the following choices is an example of a chemical change? melting ice cream a rusty car solid butter

Explanation:

A chemical change results in a new substance being formed. Melting ice - cream is a physical change (change of state from solid to liquid). Solid butter is just a state of butter, not a change. Rusting of a car occurs when iron in the car reacts with oxygen and moisture in the air to form iron oxide (rust), which is a new substance.

Answer:

a rusty car