02:46

How to explain how a catalyst works

03:05

How to explain how temperature, pressure and concentration affect the rate of a chemical reaction

02:32

What are the advantages of the different ways of making ethanol?

04:39

How do temperature and pressure affect a reversible reaction?

05:21

How to do a titration

04:03

How to read a burette

07:00

How to work out what ions there are in a compound (using chemical tests and flame tests)

04:59

How to calculate the water of crystalisation by titration

03:33

How to calculate the the concentration of bleach

03:50

How to calculate that percent of Cu in bronze or brass

03:09

How to calculate the percentage purity of an iron tablet

07:31

How to make a salt

06:13

How to tell if a compound is soluble

02:34

How to name alkenes

01:41

How to name straight chain alkanes

03:01

How to name esters

02:13

How to predict how alcohols are oxidised (GCSE)

02:45

How to work out the limiting reagent in a reaction

04:01

How to describe the difference between shells, sub shells and suborbitals

04:04

How to calculate the order of a reaction and the rate constant

03:47

How to use a Born Haber cycle to calculate lattice enthalpy

03:26

How to use the Gibbs reaction to calculate the temperature at which a reaction is feasible

04:24

How to use the Arrenhius equation to calculate A and Ea for a reaction

01:16

How to convert [H+] into pH and vice versa

03:32

How to calculate how much of a substance is made by electrolysis

02:31

How to calculate the HCO3-:H2CO3 buffer ratio in blood

05:09

How to calculate the pH of a buffer solution (H432 specimen paper)

02:12

How to explain why group 1 metals get more reactive as you go down the group

05:56

How to predict the products of electrolysis

02:31

How to calculate the pH of a buffer solution

03:51

How to write chemical equations for free radical substitution reactions

06:29

How to write equations for displacement reactions of halogens

03:41

How to tell the difference between halogens and halides

03:18

How to calculate the splitting pattern for a proton NMR

03:03

How to write the structural, molecular and empirical formula of a compound

04:26

How to draw isomers

06:56

How to predict the proton spectrum a compound would give

06:17

How to predict the 13C NMR spectrum of a compound

03:10

How to calculate relative atomic mass of an element

03:56

How to balance a chemical equation

02:58

How to explain Markovnikov’s rule using carbocations stability

01:29

How to use Markovnikov’s rule

03:36

How to tell if a chemical reaction is balanced

02:07

How to draw the mechanism for nucleophilic substitution

08:34

Addition and condensation polymers

04:27

How to use enthalpies of hydration to calculate lattice enthalpies

02:48

How to measure the energy change of a burning crisp

05:56

How to write the formulae of ionic compounds

02:43

How to use bond energy to work out the energy change of a reaction at GCSE

01:11

Filtration

03:39

Chromatography

04:01

Distillation and fractional distillation

00:41

Colours of indicators

04:25

How to calculate heat energy changes

02:03

How to draw an energy level diagram

04:43

How to do a titration calculation

03:48

Reactions of acids

02:39

How to work out the number of moles there are in a solution

03:08

How to work out how of a product a reaction would make

02:12

How to calculate the percentage of an element in a compound