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Phase Change and Triple Point

Authored by Lisa Thompson

Science

7th Grade

NGSS covered

Phase Change and Triple Point
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

At 0.10 atm, what phase(s) can exist?

solid, liquid or gas

liquid or gas

solid only

gas only

Tags

NGSS.MS-PS1-4

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Water exists as a _____________ at 700 mmHg and 50 °C.

solid

liquid

gas

supercritical fluid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Calculate the amount of energy required to melt 25.0 grams of ice.

51.25 J

8,350 J

56,500 J

250,000 J

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What change occurs from C to D?

condensation

vaporization

melting

sublimation

Tags

NGSS.MS-PS1-4

5.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Media Image

The melting point of the sample is

-60 ºC

-100 ºC

60 ºC

100 ºC

Tags

NGSS.MS-PS1-4

6.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Media Image

Which line segment represents the substance only in the solid state?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

7.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Media Image

Which line segment represents the heat of fusion (ΔHfus)?

Tags

NGSS.MS-PS1-4

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