Properties & Processes of Pure Substance

Question 1

a state, such as solid, liquid, or gas, in which a material exists under certain temperature and pressure conditions

Answer 1

phase

Question 2

two properties in which the phases are mainly dependent

Answer 2

temperature, pressure

Question 3

plasma to gas

Answer 3

recombination

Question 4

gas to plasma

Answer 4

ionization

Question 5

gas to liquid

Answer 5

condensation

Question 6

liquid to gas

Answer 6

vaporization

Question 7

liquid to solid

Answer 7

freezing

Question 8

solid to liquid

Answer 8

melting

Question 9

solid to gas

Answer 9

sublimation

Question 10

gas to solid

Answer 10

deposition

Question 11

tells us whether a material is a solid, liquid, or gas at a given temperature and pressure

Answer 11

phase diagram

Question 12

divided by lines which have different locations and slopes

Answer 12

solid-liquid-vapor phases

Question 13

It is where the three states of matter coexist simultaneously

Answer 13

triple point

Question 14

important in determining in which phase a material exists

Answer 14

triple point

Question 15

As the temperature reaches the ___________, the temperature stays constant until it becomes a saturated vapor.

Answer 15

saturation temperature (boiling point)

Question 16

As the water is heated, the pressure of the water decreases to a point called __________ where it remains constant until the saturated liquid is then turned into a saturated vapor.

Answer 16

saturated pressure

Question 17

If the temperature is well below saturation, then the phase of steam is in a ___________.

Answer 17

subcooled liquid state

Question 18

If the temperature is in the saturation temperature, we can say that it is in the ____________.

Answer 18

superheated vapor state

Question 19

Heating the water further as it reaches its saturation point, the water vapor evaporates readily from the saturated liquid. What do you call the water at this state?

Answer 19

saturated vapor

Question 20

Given that the steam was further heated, the temperature of this saturated vapor rises even more and beyond this saturated vapor point, the water loses its tendency to condense back to liquid. What do you now call the steam?

Answer 20

superheated vapor

Question 21

These are used to eliminate labor intensive calculation of thermodynamic properties.

Answer 21

thermodynamic tables

Question 22

properties tabulated in a thermodynamic table

Answer 22

internal energy, enthalpy, entropy

Question 23

This can be done to calculate the exact values of properties of pure substances with reference to values listed in the thermodynamic tables.

Answer 23

linear interpolation

Question 24

It is commonly used for interpolation between two different variables; interpolating three times over the values involved.

Answer 24

bilinear interpolation

Question 25

Thermodynamic properties of a gas can be calculate without a table and the equation of state of a gas can be used. What do you call the gas that conforms to this equation?

Answer 25

ideal gas or perfect gas

Question 26

If the thermodynamic properties cannot be accurately predicted by the equation of state, what do you call the gas?

Answer 26

real gas

Question 27

What is the most basic characteristic of an ideal gas?

Answer 27

low density

Question 28

When does a gas have low density?

Answer 28

at low pressure or at high temperature