Heating/ Cooling Curve

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

In which segment is the kinetic energy remaining constant?

• A-B
• B-C
• C-D
• E-F

Tags

NGSS.MS-PS3-1

What state(s) of matter are present at D-E?

• Solid-liquid
• Liquid
• Liquid-gas
• Gas-Solid

Tags

NGSS.MS-PS1-4

True or false: Melting occurs at a constant temperature!

• True

• False

• I don't know

A substance's heating curve is shown in the graph.  What is its boiling point?

• 100 C
• 60 C
• 80 C
• 20 C

Tags

NGSS.MS-PS1-4

At point B, the sample is going through:

• Boiling

• Melting

• Heating

• Evaporating

The melting point of the sample is

• -60 ºC

• -100 ºC

• 60 ºC

• 100 ºC

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which description best describes what is happening to the particles in section C

• The substance is melting and increasing in temperature

• The particles are gaining kinetic energy so their temperature is increased

• Boiling is occurring and bonds are being broken

• The substance is a mixture of solid, liquid and gas