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More Lessons for IGCSE Chemistry
Math Worksheets
A series of free IGCSE Chemistry Activities and Experiments (Cambridge IGCSE Chemistry).
The following diagrams show Natural Polymers (Amino Acids, Proteins, Glucose, Starch). Scroll down the page for more examples and explanations.

How to make carbohydrates?
Complex carbohydrates consists of a large number of sugar units joined together by condensation polymerisation.
How to make proteins?
Proteins possess the same (amide) linkages as nylon, but consists of different units of amino acids joined together by condensation polymerisation.
Hydrolysis of Carbohydrates, Proteins and Fats
Describe the hydrolysis of proteins to amino acids.
Describe the hydrolysis of complex carbohydrates (e.g. starch), by acids or enzymes to give simple sugars
Chromatography of Amino Acids
Describe, in outline, the usefulness of chromatography in separating and identifying the products of hydrolysis of proteins.
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe.
There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics
of fraction addition and subtraction or challenge yourself with the insane level.
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