Exploring Phases of Matter and Phase Changes

The video tutorial covers lesson 4 on phases or states of matter and phase changes. It begins with housekeeping notes and proceeds to 'Do Now' activities focusing on the water cycle. The main content discusses the states of matter: solids, liquids, and gases, and their characteristics at both observable and molecular levels. The tutorial explains phase changes such as melting, evaporation, condensation, and freezing, emphasizing the role of heat. It also explores how heat affects molecular movement and concludes with a recap of major points.

What should students do if they are missing any lessons or exit tickets?

• Wait until the next class

• Post on Google Hangouts

• Send an email to the teacher

• Call the teacher

In which stage of the water cycle do clouds form?

• Condensation

• Collection

• Evaporation

• Precipitation

Tags

NGSS.MS-ESS2-4

Which two factors help power the movement of water in the water cycle?

• Weather and the Moon

• The Sun and Gravity

• Weather and Gravity

• The Sun and the Moon

Tags

NGSS.MS-ESS2-4

What is a characteristic of solids at the molecular level?

• Molecules move past each other freely

• Molecules are close together and vibrate in place

• Molecules take the shape of their container

• Molecules are far apart and move quickly

Tags

NGSS.MS-PS3-4

How do liquids behave at the visible level?

• They have a definite shape and volume

• They have a definite volume but take the shape of their container

• They have no definite shape or volume

• They are always in a gaseous state

What happens to gas molecules at the molecular level?

• They are close together and vibrate in place

• They are close together and move past each other

• They are far apart and move quickly

• They take the shape of their container

Tags

NGSS.MS-PS1-4

What is the process of changing a solid to a liquid called?

• Evaporation

• Condensation

• Melting

• Solidification

Tags

NGSS.MS-PS1-4

What phase change occurs when a liquid becomes a gas?

• Melting

• Evaporation

• Freezing

• Condensation

Tags

NGSS.MS-PS1-4

What happens to the movement of molecules when heat is added?

• They move slower and get closer together

• They move faster and get farther apart

• They stop moving

• They change into a solid

Tags

NGSS.MS-PS1-4

What would happen to the balloon if the bottle was placed in ice water?

• The balloon would contract

• The balloon would stay the same

• The balloon would expand

• The balloon would burst

Tags

NGSS.MS-PS1-4