States of matter part 2

When a substance changes from a gas to a liquid it is called

• Evaporation
• Condensation
• Freezing
• Melting

Tags

NGSS.MS-PS1-4

When a substance changes from a solid to a liquid it is called

• Evaporation
• Condensation
• Freezing
• Melting

Tags

NGSS.MS-PS1-4

Sublimation is the term we use to describe which phase change?

• Liquid to a gas
• Solid to a gas
• gas to a liquid
• Gas to a solid

Tags

NGSS.MS-PS1-4

When water boils, what is inside the bubbles?

• Air
• Oxygen gas
• Water Vapor
• Hydrogen gas

Which of the following substances is the most volatile?
Water boiling point = 100 C
Ethanoic Acid boiling point = 128 C
Ethanol Boiling point = 78 C

• Water
• Ethanoic Acid
• Ethanol

Tags

NGSS.MS-PS1-4

Why does water NOT change temperature during phase changes?

• Because the molecules of water take in all the heat to their nucleus
• Because heat is not the same thing as temperature
• Because adding heat doesn't ever change the temperature of water
• Because all of the energy is used to overcome the attraction of molecules

Tags

NGSS.MS-PS1-4

What phase of matter is illustrated in "C"

• solid
• liquid
• gas
• melting

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is labelled "B" on the graph?

• solids
• liquids
• gases
• a phase change

Tags

NGSS.MS-PS1-4

What is happening at "D" on the graph?

• Water is vaporizing
• water is freezing
• water is melting
• the sublimation of water

Tags

NGSS.MS-PS1-4

Why does the graph have two flat lines at "b" and "d"?

• Those are times when we took the water off the hot plate
• Those are phase changes where temperature doesn't change while adding heat
• The line is flat because the water is all in the solid or gas phase
• The line is flat because temperature increases the most at those locations

Tags

NGSS.MS-PS1-4