Question Bank for Grade 8 Science

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

The temperature of a substance increases as___.

• the substance expands
• the average kinetic energy of its particles increases
• the substance's volume increases
• the substance's mass increases

Atoms or molecules in this state of matter have the lowest energy.

• Solid

• Liquid

• Gas

• Plasma

Atoms or molecules in this phase of matter have the highest energy.

• Solid

• Liquid

• Gas

• Plasma

Heating a solid to a high temperature will usually result in this phase change.

• Condensation

• Melting

• Sublimation

• Evaporation

Placing liquid water in the freezer will result in what phase change?

• Condensation

• Freezing

• Ionization

• Vaporization

In colder environments, gaseous water vapor can turn directly to solid ice on a window. What is this process called?

• Deposition

• Evaporation

• Freezing

• Vaporization

_____ is directly related to the ______ of the particles that make up matter.

• Thermal energy, temperature

• Motion, energy

• Temperature, speed

• Temperature, particles

A change that alters the physical properties of a substance without changing its composition.

• Physical Change
• Chemical Change

Reacts with Water: Chemical or Physical Property

• Chemical Property
• Physical Property