matter and its changes

Which of the following is a characteristic of a solid?

• • No definite shape

• • Definite volume

• • Particles are far apart

• • Takes the shape of the container

Which state of matter takes the shape of its container but has a definite volume?

• • Solid

• • Liquid

• • Gas

• • Plasma

• In which state of matter do particles move freely and spread out to fill the entire container?

• • Solid

• • Liquid

• • Gas

• • Plasma

What happens to the particles in a solid when it is heated and becomes a liquid?

• • They move faster and spread apart

• • They stay in place

• • They become stationary

• • They move closer together

Which of the following is an example of a compound?

• • Gold

• • Oxygen

• • Water

• • Iron

What happens during evaporation?

• • A gas turns into a liquid

• • A solid turns into a liquid

• • A liquid turns into a gas

• • A gas turns into a solid

Which process describes a solid turning directly into a gas?

• • Melting

• • Freezing

• • Sublimation

• • Condensation

When a gas cools down and becomes a liquid, what is this process called?

• • Condensation

• • Evaporation

• • Melting

• • Freezing

What is an example of a homogeneous mixture?

• • Fruit salad

• • Saltwater

• • Sand and water

• • Soil

Which of the following is a sign of a chemical change?

• • A solid turns into a liquid

• • A color change occurs

• • The substance remains the same

• • The shape changes but the substance stays the same