3.3 Solids, Liquids and Gases

Which characteristic describes a solid?

• Particles are far apart and randomly distributed.

• Particles are closely packed in an orderly, repeating pattern.

• Particles are close together but able to slip past each other.

• Particles are not crystalline but have solid properties.

What is a defining structural characteristic of true solids?

• They are amorphous in structure.

• They have an orderly, repeating crystal lattice.

• Their molecules are far apart from each other.

• They have properties of both solids and liquids.

What term describes materials that have properties of solids but are not crystalline in structure?

• Crystalline solids

• Liquid crystals

• Amorphous materials

• Gaseous solids

Which state of matter is unique in its ability to be significantly compressed and to expand to fill any container?

• Solid

• Liquid

• Gas

• Plasma

What determines the pressure of a gas?

• The amount of space the gas takes up.

• How often gas molecules collide with the container walls.

• The average kinetic energy of the molecules.

• The number of moles of gas present.

What is temperature a measure of in relation to gas molecules?

• The total mass of the molecules.

• The amount of space the molecules occupy.

• The average kinetic energy of the molecules.

• The number of molecules present.

What two factors primarily determine the kinetic energy of gas molecules?

• Pressure and volume

• Mass and velocity

• Temperature and pressure

• Volume and temperature