Esters

esters can often be found in perfume

​When an alcohol reacts with a carb...
  0 Comments
0 Comments

2.44 Tests for gases

Gases can be compressed

​Physically gases have a number of similarities. F...
  0 Comments
0 Comments

Giant covalent lattices

Past paper questions on  giant lattices https...
  0 Comments
0 Comments

1.47 - 1.51 Properties of covalent substances

Ice melts at 0 degrees C, Diamond remains solid until its temperature is above 3500 degrees

Look at the images of ice and diamond.  In so...
  0 Comments
0 Comments

Food for thought

​Intro image ​Why there might still be hope.. Ente...
  0 Comments
0 Comments

1.31 Finding formulae


Finding the formula of a compound is important to ...
  0 Comments
0 Comments

1.30 Percentage yield

A 50% yield

In this section we consider how much product ...
  0 Comments
0 Comments

Metal or non-metal ?

{tab Questions}This is question 1 This is question...
  0 Comments
0 Comments

1.10 Separation techniques


 Students should:1.10 describe these experime...
  0 Comments
0 Comments

Rusting rates

​Intro image Enter your text here ... Enter your t...
  0 Comments
0 Comments

Effect of particle size on the rate of rusting


​To test the effect of particle size on the rate o...
  0 Comments
0 Comments

Testing for water

Water is an odourless, colourless liquid. So are many other chemicals .

Introduction Water has no obvious smell. &nbs...
  0 Comments
0 Comments

Testing for carbon dioxide


​Intro image Enter your text here ... Enter your t...
  0 Comments
0 Comments

Testing for oxygen


Oxygen is a  very reactive gas. It makes up a...
  0 Comments
0 Comments

Testing hydrogen


Introduction ​Hydrogen is a flammable gas. It burn...
  0 Comments
0 Comments

Periodicity

First ionisation energiesInfogramEnter your text h...
  0 Comments
0 Comments

1.10 Crystallisation

Crystallisation can be used to separate a solid solute from its solvent. Re-crystallisation is used to purify samples obtained in the laboratory. But what is a crystal? 

  0 Comments
0 Comments

1.10 Fractional distillation

 Find out about fractional distillation ; why it is different from simple distillation and how it can be used industrially

  0 Comments
0 Comments

1.10 Simple distillation

Distillation is used to separate liquids from one another.  Visit this page to see distillation in the laboratory and look at an industrial scale process.

  0 Comments
0 Comments

1.10 - 1.13 Chromatography

Chromatography is another important separation technique. Several different types of chromatography exist.  

  0 Comments
0 Comments