Matter : Phases, Changes, Formulas and Reactions

The Law of Conservation of Matter states that ...

• Matter cannot be created or destroyed, it can only change forms.

• Matter has both mass and volume.

• Matter cannot be created but can be destroyed.

• Inertia is a property of matter

In a physical change...

• matter can change in shape or form but the way the matter is arrange remains the same

• matter can change the way it is arranged which involves the making and breaking of chemical bonds between atoms to form a new chemical substance

• the changes are accompanied by a reaction

• a difference substance is produced

Chemical changes involve the making and breaking of chemical bonds and a new substance is produced

• True

• False

Which of the following terms identifies the change from a liquid to gas?

• Evaporation

• Condensation

• Deposition

• Sublimation

Which of the following is a physical change of matter?

• melting ice

• burning wood

• Fireworks

• Mixing vinegar and baking soda

Which of the following is a chemical change of matter?

• Chopping wood

• Shredding paper

• Ice melting to water

• Burning wood

In an endothermic phase change... (choose 2)

• heat energy is added

• heat energy is removed

• temperature increases

• temperature decreases

In an exothermic phase change... (choose 2)

• heat energy is added

• heat energy is removed

• temperature increases

• temperature decreases

Which phase of matter?

• solid

• liquid

• gas

Which phase of matter?

• solid

• liquid

• gas