Flashcards in Thermal Deck (21):

1

## Avogadro constant

### Number of atoms in 12g of carbon 12

2

## One atomic mass unit

### 1/12 the mass of a C 12 atom

3

## Mole

### One mole is the quantity of a substance that contains NA particles

4

## Molarity

### Number of moles in a given quantity of a substance

5

## Molar mass

###
The mass of 1 mol of substance

kgmol^-1

6

## Number of moles in mass Ms of a substance

### Ms/M

7

## Number of molecules in mass Ms of substance

### NAMs/M

8

## Charles law

### V/T constant

9

## Pressure law

### P/T constant

10

## Boyles law

### PV constant

11

## Ideal gas?

### Obeys boyles law

12

## Ideal gas equation:

### pV = nRT

13

## Density of ideal gas

###
Mass/Volume

nM/V

pM/RT

14

## pV=

### NkT

15

## Kinetic theory equation assumptions

###
1) Brownian motion

2) elastic

3) molecules don’t attract

4) collision time shorter than moving time

5) molecules are point molecules

16

## 1st law of thermodynamics

### The change of internal energy of an object = the total energy transfer due to work done and heating

17

## Internal energy

### Sum of the random distribution of KE and PE of its molecules

18

## Latent Heat of Fusion

### Energy needed to melt a solid at its melting point

19

## Latent Heat of vaporisation

### Energy needed to vaporise a liquid

20

## Specific latent Heat of fusion

### Energy needed to change state of unit mass from solid to liquid without temperature change

21