Question

which of the following is an example of a chemical change? nails rusting ice melting a piece of bread being cut in half

Explanation:

A chemical change results in a new substance being formed. Nails rusting is a chemical reaction where iron reacts with oxygen and moisture to form iron oxide (rust). Ice melting is a physical change (change of state from solid to liquid), and cutting bread is a physical change (change in shape and size without forming a new substance).

Answer:

nails rusting