Question

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10 which of the following describes a chemical reaction? a oxygen interacts with iron to form rust b ice melts into water c carbon dioxide freezes to make dry ice d rocks split apart over many years due to weathering

Explanation:

A chemical reaction results in the formation of a new substance with different chemical properties. Oxygen interacting with iron to form rust (iron - oxide) is a chemical reaction as a new compound is formed. Ice melting into water and carbon - dioxide freezing to make dry ice are physical changes (changes of state). Rocks splitting due to weathering is a physical process, not a chemical reaction.

Answer:

A. Oxygen interacts with iron to form rust