Grade 7 Science Quiz

Maria observes water boiling in a pot on the stove. What phase change is occurring when the liquid water turns into steam?

• Condensation

• Melting

• Freezing

• Evaporation

During winter, a puddle of water outside turns into ice overnight. What is this process called?

• Sublimation

• Freezing

• Melting

• Condensation

When you open a bottle of perfume, the scent quickly spreads. this shows what state?

• Solid particles vibrating in fixed positions.

• Liquid particles sliding past each other.

• Gas particles moving freely and rapidly.

• Plasma particles with high energy.

What state of matter has a definite volume but no definite shape?

• Solid

• Liquid

• Gas

• Plasma

When ice melts into water, it's called freezing.

• True
• False

Evaporation is a phase change from liquid to gas.

• True

• False

Condensation occurs when water vapor cools and forms liquid.

• True

• False

The Particle Arrangement of solid is far away from each other.

• True

• False

In a solid, particles are packed closely together and can only _______ in place.

The process of changing from a liquid to a gas is called _______.