Matter and Its Properties

Which correct pair of properties below is common to all matter?

• Shape and Weight

• Mass and volume

• Compressibility and Density

• Color and Size

Which statement is false?

• Chemical changes form new substances

• Physical changes are phase changes

• Solids have a definite size and volume

• Compounds are a combination of two or more elements

Which among the choices is incorrect?

• Solid to gas: sublimation

• Solid to liquid: melting

• Liquid to gas: boiling

• Gas to solid: condensation

What happened to the energy when liquid turns into solid?

• Increases

• Decreases

• Stays the same

• I don’t know

In theatre plays, dry ice is used to create a smoke effect during an intense scene. What process in phase change this event refers to?

• Evaporation

• Sublimation

• Melting

• Deposition

Water in liquid form turning into ice is same in composition but different in phases.

What phase change process happens in the above situation undergoes?

• Evaporation

• Sublimation

• Melting

• Freezing

Water in liquid form turning into ice is same in composition but different in phases.

What changes in matter the statement above experiences?

• Physical change

• Chemical change

• both A and B

• neither A nor B

You are doing a laboratory activity to observe chemical changes. You have to add a 1.0 M solution of silver nitrate (AgNO₃) to a salt solution. Later, you have noticed that a solid substance was formed. What is the indicator for this chemical change?

• Formation of precipitates

• Emission of heat and light

• Changes in color

• Changes in smell and taste

As temperature increases, heat energy ____________________.

Particles move faster when they __________________ energy and slower when they ____________________ energy.