4NA Kinetic Model of Matter

Which of the following properties cannot be explained by the kinetic theory of particles?

• Density

• Compressibility

• Shape

• Colour

Which of the following statements best explains why the fragrance of a perfume can move from one place to another?

• The perfume particles moves randomly in all directions on their own.

• The perfume particles expand their sizes when exposed to the air.

• The perfume particles are carried by the air molecules.

• The perfume particles are moved by wind.

Which of the following is not a property of a solid?

• It expands a little when heated compared to a liquid.

• It takes any shape of a container.

• It is not easily to be compressed.

• It usually has a higher density than a gas.

What could be the change when heat is supplied to a gas?

• The particles in the matter expand tremendously.

• The particles move randomly at all directions.

• The average kinetic energy of the particles increases.

• The particles contract and occupy lesser space.

Which explanation about the incompressibility of a liquid compared to a gas of the same substance is correct?

• The particle size is bigger when the substance is in the liquid state.

• The liquid particles are closer together than the gaseous particles.

• The liquid particles are heavier than the gaseous particles.

• The liquid particles cannot move about freely.

Which of the following statements about matter is not correct?

• All matter has a fixed mass.

• All matter occupies space.

• All matter contains atoms.

• All matter has fixed weight.

Which of the following factors affects the compressibility of a substance in terms of the particulate model of matter?

• attractive forces between particles

• arrangement of particles

• distance between particles

• motion of particles

Which of the following statements about the particles in liquids is not correct?

• The particles can slide over one another easily.

• The particles do not vibrate but can move about freely.

• The particles are attracted to each other by moderate forces.

• The particles do not have a fixed arrangement.

Which of the following causes a change in density when a liquid turns into a gas?

• change in the amount of spaces the particles occupy

• change in the mass of the particles

• change in the arrangement of the particles

• change in the average kinetic energy of the particles

A substance consists of particles that are close together and moving past each other at random. The average speed of the particles is gradually increasing.

What best describe the substance?

• a liquid boiling

• a liquid being heated

• a solid being heated

• a solid being melted