Phases

Question 1

Does a physical change disrupt intramolecular bonds or intermolecular

Answer 1

Intermolecular

Question 2

What is gas to solid called?

Answer 2

Deposition

Question 3

If bring molecules together what happens to heat?

Answer 3

It is released

Question 4

If molecules are spread apart what happened to heat?

Answer 4

It is absorbed

Question 5

What is a calorie?

Answer 5

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

Question 6

How many joules in 1 calorie?

Answer 6

4.2 joules

Question 7

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

Answer 7

No

Question 8

Amount of heat absorbed or released is proportional to what?

Answer 8

Temperature

Question 9

What does specific heat tell us?

Answer 9

How resistant substance is to changing temp

Question 10

What is specific heat dependent on?

Answer 10

Phase of substance

Question 11

At high temps and low pressure what phase is preferred?

Answer 11

Gas

Question 12

At high pressure and low temp what phase is preferred?

Answer 12

Solid

Question 13

What is critical point?

Answer 13

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

Question 14

What is triple point?

Answer 14

Temp and pressure that all three phases exist in equilibrium

Question 15

Can pressure force supercritical fluid back to liquid phase?

Answer 15

No

Question 16

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

Answer 16

Increase

Question 17

Will CO2 turn to liquid when pressurized?

Answer 17

No