Question

Which of the following statements is correct about a chemical change?

• A. A chemical change is always accompanied by the liberation or absorption of energy.
• B. No new products are formed.
• C. The change is temporary and reversible.
• D. There is no change in shape, colour, and size of the substance.

Answer 1

The correct option is A A chemical change is always accompanied by the liberation or absorption of energy.

The chemical change is always accompanied by the liberation or absorption of energy. All other properties are characteristics of a physical change.