Which is the smallest particle of matter?

• Atom

• Cell

• Element

• Molecules

Which of the following are particles of matter?

• Gas and solid

• Mass and weight

• Atoms and molecules

• Electrons and protons

Which of the following describes matter?

• It exists in two phases.

• Either has no mass or doesn’t fill a volume.

• Anything that takes up space and has mass.

• It is made up of small particles called elements.

Which do you think has the strongest force of attraction between the particles?

• Gas

• Solid

• Liquid

• Vacuum

How would you describe the properties of solid, liquid and gas at a macroscopic level?

• Based on their movement.

• Based on their arrangement.

• Based on their size and shape.

• Based on their shape and volume.

What would happen to the atoms and molecules of a substance when temperature is increased?

• The atoms and molecules stay the same.

• The atoms and molecules will lose energy.

• The atoms and molecules will gain energy.

• The atoms and molecules will collide with one another.

Why gas molecules can easily be compressed?

• Gas molecules are soft.

• Gas molecules are far apart.

• Gas molecules are free and move easily.

• Gas molecules follow the shape of the container.

Why do liquids have the ability to evaporate?

• Liquid particles can slide past one another.

• Liquid particles are relatively close together.

• There are no attractive forces between liquid particles.

• Liquid particles have enough energy to escape into gas state.

How can you classify solids from liquids according to their volume and shape?

• Both solids and liquids have definite shape and volume.

• Both solids and liquids have indefinite shape and volume.

• Solids have no definite shape and volume while liquids have.

• Solids have a definite shape and volume while liquids have a definite volume but take the shape of the container.

What can you infer on the forces of attraction of molecules when solid ice turns to liquid water?

• They lose energy.

• They gain energy.

• The particles get compressed.

• The particles are magnetized.