Heating Curve (KE and PE) Quick Check #2

What line segment represents only the solid state?

• A-B

• B-C

• C-D

• D-E

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What change is occurring at the particle level during the phase change boiling?

• Particles are moving faster

• Particles are moving slower

• Particles are moving further apart

• Particles are moving closer together

What change is occurring at the particle level while heating up a solid? Hint: A phase change is not occurring.

• particle are moving faster

• particle are moving slower

• particle are moving further apart

• particle are moving closer together

The graph shows a cooling curve for an unknown substance.  What is happening during segment DE?

• boiling

• condensation

• freezing

• melting

Tags

NGSS.MS-PS1-4

What is the state of the substance at point C?

• Liquid

• Solid

• Gas

• Plasma

Tags

NGSS.MS-PS1-4

What is the phase of the substance at point E?

• Liquid

• Solid

• Gas

• Plasma

What phase change is happening at point D?

• Vaporization

• Sublimation

• Freezing

• Melting

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

What is occurring during segments "b" and "d"?

• Substances are being heated

• Substances are going through a phase change

• Nothing is happening during those segments

Which segment represents the heat of fusion?

• A-B

• B-C

• C-D

• D-E

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4