heating curve/states

NaCl was heated starting at an initial temperature of 0°C. The heating curve is shown in the picture. What is the melting point of this substance?

• 0°C

• 801°C

• 1000°C

• 1465°C

Tags

NGSS.MS-PS1-4

In which region(s) does temperature increase?

• Region C only

• Regions B and D

• Regions A, C, and E

• Regions A and B

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In a heating curve, diagonal lines indicate temperature is __________, while flat lines indicate temperature is __________.

• Constant, changing

• Changing, constant

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Describe the substance at letter A.

• Solid

• Liquid

• Melting

• Evaporating

Tags

NGSS.MS-PS1-4

The melting point of the sample is

• -60 ºC

• 20 ºC

• 60 ºC

• 100 ºC

Tags

NGSS.MS-PS1-4

In which region(s) of the heating curve would water be a liquid and a gas at the same time?

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following terms identifies the change from a liquid to gas?

• Vaporization
• Condensation
• Deposition
• Sublimation

Tags

NGSS.MS-PS1-4

The slower the particles in a substance move,

• the colder it is.

• the warmer it is.

• the more energy it has.

Tags

NGSS.MS-PS1-4

What is happening to the particles in the substance between points D and E?

• Melting

• Freezing

• Vaporizing

• Sublimating

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Matter that has no definite shape, nor volume.

• Solid
• Liquid
• Gas

Tags

NGSS.MS-PS1-4