L3_Unit 5.3 Changing State

Energy in the form of heat was applied to a beaker containing a certain substance. The particles of the substance began to move farther apart until they were arranged as shown by the arrow in the diagram. What change of state occurred to the substance in the beaker?

• The substance changed from a gas to a solid.

• The substance changed from a liquid to a solid

• The substance changed from a gas to a liquid

• The substance changed from a liquid to a gas.

Melting is a process that changes _____________________________.

• solid to liquid

• liquid to solid

• liquid to gas

• gas to liquid

The change from liquid to solid is called ________________.

• Melting
• Freezing
• Evaporation
• Condensation

What are the three main states of matter?

• solid, particles and molecules

• solid, liquid and gas

• gas, steam and vapor

• steam, liquid and glass

Boiling occurs when a liquid is heated and it changes into a

• Solid

• Liquid

• Gas

• Ice

In which state of matter are particles moving the least?

• solid
• liquid
• gas
• gummy bears

How is the state of the substance in the image changing?

• Gas to liquid

• Solid to liquid

• Liquid to solid

As coconut milk is heated, bubbles can be seen in the pan. What is happening to the liquid?

• It is freezing

• It is condensing

• It is melting

• It is boiling

Which of the following is a correct description for solids?

• closely arranged and in fixed positions

• closely arranged and vibrate in fixed positions

• closely arranged and can move around

What is the change of state from a solid straight to a gas called?

• melting
• evaporating
• freezing
• sublimation