A.State whether the following statements are true or false.

1.Liquids have fi xed shape and volume.

2. The volume of liquid depends on the size of the particles.

3. The molecules of gases are in constant motion.

Name the following.

1. Name the law that states that mass can neither be created nor destroyed.

2. Name the substance formed on burning of wood in air.

A.1. False 2. True 3. True

B.1. Law of Conservation of Mass 2. Ash