Chapter 5- STATES OF MATTER Flashcards Preview

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Flashcards in Chapter 5- STATES OF MATTER Deck (19):
0

Ideal Gas

PV=nRT

P is pressure in atm
V is volume in liters
N is number of moles
T is temperature in kelvin
R is rate (given on test)

1

Boyles Law

P1V1 = P2V2

2

Kinetic Molecular Theory of Gases

Gases are made up of particles that are in constant random motion
Average kinetic energy of the molecules increases or decreases in proportion to absolute temperature

3

Charles Law

V1/T1 = V2/T2

4

Combined Gas Law

(P1V1)/T1 = (P2V2)/T2

5

Avagadros Law

V1/n1 = V2/n2

Where V is volume and n is number of moles

6

Standard Temperature and Pressure STP

D= mass/volume

Molecular volume of gas is 22.4L
Temperature is 273 Kelvins
Pressure is 1.00 atm

7

Dalton's law of partial pressures

States that the tot pressure of the mixture of gases is the sum of the total partial pressure

P= p1 + p2 + p3 +...

8

1 atm is equal to what?

1 atm=

760mmHg
760torr

9

Compressibility: liquids are yes or no? Explain

Liquids are incompressible. The molecules are so close together that the application of pressure does not decrease the volume

10

Viscosity

It is the measure of a liquids resistance to flow. It generally tends to decrease with increasing temperature

11

Surface Tension

ST of a liquid is a measure of the attractive forces exerted among molecules at the surface of a liquid.

12

Surfactants

They can be added to a liquid to decrease surface tension. (Soaps/detergents- reduce waters ST to help water interact better with grease and dirt helping to stain remove)

13

Evaporation

Liquid to gas

14

Condensation

Gas to liquid

15

Vapor pressure of a liquid

Defined as the pressure exerted by the vapor at equilibrium

16

What variables can be measured for real gases?

Temp
Pressure
Volume
Quantity (mass)

17

Properties of gases

Easily compressible
Expands to fill any volume
Low density
Diffuses through one another
Experts pressure on containers
Behaves ideally at low pressure and high temp

18

What is molar volume

The volume occupied by 1 mol of any gas