Question

8. Changes in which new substances are formed are
a) Reversible
b) Physical c) Chemical​

Answer 1

Changes in which new substances are formed are Chemical changes.

• A chemical reaction can be described as a type of reaction in which reactants react form a new product with new properties.
• On the other hand, in a physical reaction no new substances are formed. In a physical change, properties of the substance change.
• The composition of a substance changes in a chemical reaction.