1.10 Filtration
David Fowkes
Principles of chemistry
Filtration can be a simple technique used to separate insoluble solids from a mixture or suspension. It has a lot of everyday applications.
1.8 Elements compounds and mixtures
David Fowkes
Elements, compound and mixtures
compounds, elements or mixtures ?  Sun and air? Study the seaside image for a f...
Elements, compounds, mixtures, solutions, environments ..
David Fowkes
Uncategorized
compounds, elements or mixtures, ecosystems or environments?   Sun and air? Study the seaside image for a f...
Compound or mixture?
David Fowkes
Uncategorized
Sun and air Study the seaside image for a few...
The Dead Sea
David Fowkes
Principles of chemistry
The Dead Sea is below sea level, this means that i...
ethanol test post
David Fowkes
Uncategorized
Ethanol is a liquid
4.7 - 4.9 Crude oil
David Fowkes
IGCSE Chemistry
Crude oil is a major source of raw material for the petrochemical industry. 
3.17 - 3.22 Reversible reactions and equilibria
David Fowkes
IGCSE Chemistry
A question of balance  Many chemical reactions can be reversed.&nbs...
Diffusion
David Fowkes
IGCSE Chemistry
 Students should: 1.3 understand how the resu...
3.1 - 3.8 Energetics
David Fowkes
IGCSE Chemistry
An exothermic reaction  3.1 Energetics  Students should: 3.1 kn...