Kinetic Particle Model of Matter

Which describes the arrangement of particles in a solid?

• very far apart and randomly arranged

• closely packed together and randomly arranged

• closely packed together in a regular pattern

Which describes the arrangement of particles in a liquid?

• very far apart and randomly arranged

• closely packed together and randomly arranged

• closely packed together in a regular pattern

Which describes the arrangement of particles in a gas?

• very far apart and randomly arranged

• closely packed together and randomly arranged

• closely packed together in a regular pattern

Which describes the movement of particles in a solid?

• vibrate about fixed positions

• move randomly at very high speeds

• slide randomly past one another

Which describes the movement of particles in a liquid?

• vibrate about fixed positions

• slide randomly past one another

• move randomly at very high speeds

Which describes the movement of particles in a gas?

• move randomly at very high speeds

• slide randomly past one another

• vibrate about fixed positions

Which is arranged correctly from strongest to weakest intermolecular forces?

• gas, liquid. solid

• solid. liquid. gas

• liquid, gas, solid

Why do solids have high densities?

• They vibrate at fixed positions.

• They have a fixed shape.

• The particles in solids are closely packed together.

Why are gases compressible?

• The particles have very weak intermolecular forces and move about randomly at very high speeds.

• The particles are randomly arranged.

• The particles are very far apart with very strong intermolecular forces.

A cup of water is heated up and its temperature increases. Which is correct about the change in movement of the water molecules?

• The water molecules move more slowly.

• The water molecules move faster.

• There is no change in the speed of the water molecules.