Fluids Unit Grade 8

Which form of matter has a definite shape ?

• Liquid

• Solid

• Gas

• Solid and liquid

A gas...

• has a definite shape but no definite volume

• has a definite volume but no definite shape

• has fast-moving particles

Which of the following occurs when a liquid becomes a gas?

• the particles slow down

• the particles break away from one another

• the particles move closer together

Which state has stronger Inter molecular Forces?

• Liquid

• Gas

• Solid

• Liquid and Solid have the same force

Particles are always moving

• True

• False

Particles always _______________ each other, this gets stronger as the particles get ___________________.

• attract, farther apart

• repel, farther apart

• attract, closer together

• repel, closer together

Particles at a higher temperature, move _____________ than those at a lower temperature.

• Slower

• Faster

• At lower temperatures, particles don't move

Which image shows particles in a liquid?

• 
• 
• 

As the temperature of a liquid increases, its viscosity __________ because

 

 particles are ________ ________ which leads to a ________force of attraction between particles.

• Decreases

  Further apart

  weaker

• Increases

  Closer together

  weaker

• Increases

  Further apart

  stronger

• Decreases

  Closer together

  Stronger

Which state of matter is fluid ?

• Gas

• Liquid

• Gas and Liquid

• Solid