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Flashcards in Phases Deck (17):
1

Does a physical change disrupt intramolecular bonds or intermolecular

Intermolecular

2

What is gas to solid called?

Deposition

3

If bring molecules together what happens to heat?

It is released

4

If molecules are spread apart what happened to heat?

It is absorbed

5

What is a calorie?

Amount of heat required to raise temp of 1 gram of water by 1 degree Celsius

6

How many joules in 1 calorie?

4.2 joules

7

Does temp change and phase change happen at the same time?

No

8

Amount of heat absorbed or released is proportional to what?

Temperature

9

What does specific heat tell us?

How resistant substance is to changing temp

10

What is specific heat dependent on?

Phase of substance

11

At high temps and low pressure what phase is preferred?

Gas

12

At high pressure and low temp what phase is preferred?

Solid

13

What is critical point?

Marks end of liquid gas boundary. There is high density and low viscosity

14

What is triple point?

Temp and pressure that all three phases exist in equilibrium

15

Can pressure force supercritical fluid back to liquid phase?

No

16

For water does an increase in pressure or decrease in pressure favor liquid phase?

Increase

17

Will CO2 turn to liquid when pressurized?

No