Question

Reacts with another substance

is this a physical change?

Answer 1

No, when a substance reacts with another substance, it typically involves a chemical change rather than a physical change. A chemical change results in the formation of new substances with different chemical properties, whereas a physical change only alters the form or appearance of a substance without changing its chemical composition. For example, mixing baking soda with vinegar causes a chemical reaction that produces carbon dioxide gas, while melting ice into water is a physical change because the chemical structure of H2O remains the same.