Question

question 5 (essay worth 4 points) which of the following is an example of a chemical change? dissolving sugar in coffee evaporating rubbing alcohol freezing water rusting iron (0109rlc) during an experiment, water was heated in a container covered with a glass lid. water droplets formed on the inside of the glass lid and...

Explanation:

To determine a chemical change, we check for new substance formation. Dissolving sugar (physical, no new substance), evaporating alcohol (physical, state change), freezing water (physical, state change) are physical changes. Rusting iron involves iron reacting with oxygen to form iron oxide (new substance), so it's a chemical change.

Answer:

Rusting iron