which of these are examples of chemical changes? check all that apply. burning a candle boiling alcohol…
which of these are examples of chemical changes? check all that apply. burning a candle boiling alcohol frying an egg melting an ice cube making coffee done
Answer
Brief Explanations:
A chemical change results in the formation of new substances. Burning a candle involves the reaction of wax with oxygen to produce carbon - dioxide and water, a chemical change. Frying an egg causes proteins in the egg to denature and new chemical compounds to form, a chemical change. Boiling alcohol is a physical change (change of state from liquid to gas). Melting an ice - cube is a physical change (solid to liquid). Making coffee mainly involves dissolving substances and is a physical change.
Answer:
burning a candle, frying an egg