Answer
a. Solid
b. Liquid
c. Gas
d. Solid
Work Step by Step
a. Sodium hydrogen carbonate or as it is known in everyday life “Baking soda” is a white powder. It is characterized by rigidity Thus it is a solid in its normal state.
b. Isopropyl alcohol (rubbing alcohol) is a liquid in its normal state. It has a fixed volume but it doesn’t have a fixed shape.
c. Carbon monoxide in its normal state is a gas as it is easily compressed and it doesn’t have a fixed shape or volume ( it will fill container of any shape and dimensions).
d. Lead is a solid in normal state. It has a fixed shape and volume and it is in-compressible.
