Changes in States of Matter

What is melting?

• change in state from liquid to solid

• change in state from solid to gas

• change in state from solid to vapor

• change in state from solid to liquid

What is freezing?

• change in state from a solid to a liquid

• change in state from a liquid to a solid

• change in state from a gas to a liquid

What is vaporization?

• change in state from a gas to a liquid

• change in state from a liquid to a solid

• the change in state from a liquid to a gas

What is evaporation?

• the process by which water molecules in liquid water escape into the air as water vapor

• the process where a solid becomes a liquid

• the process by which water molecules in a gas turn into a solid

A large piece of ice is placed on the sidewalk on a warm day. What will happen to the ice? 

• It will melt to form liquid water
• It will melt to form water vapor
• It will not change at all.
• It will freeze to form liquid water. 

Tags

NGSS.MS-PS1-4

What is Boiling?

• the process that occurs when a gas turns into a liquid

• the process that occurs when vaporization takes place inside a liquid as well as on the surface

• the process that occurs when a solid melts

What is boiling point?

• the temperature at which a gas turns into a liquid

• The temperature at which a solid turns into a gas

• The temperature at which a liquid changes to a gas. In water, it is 100 degrees Celsius.

What is melting point?

• The temperature at which a solid becomes a liquid

• The temperature at which a solid becomes a gas

• The temperature at which a liquid becomes a liquid

An ice cube is placed in a pan. The pan is placed over an open flame. Which change will MOST likely happen over time?

• The ice changes to a gas then a liquid
• The ice changes to a gas and then back to a solid
• The ice changes to a liquid then to a gas.
• The ice changes to a liquid and back to a solid. 

Tags

NGSS.MS-PS1-4

How can you make liquid water become a solid?

• Add a lot of salt to the water.
• Put the water in a very cold place
• Shake the water container very fast.
• Heat the water on the stove.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4