Learn about elements, compounds and mixtures in this KS3 Chemistry guide from BBC Bitesize.

KS3 Chemistry Atoms, elements and compounds learning resources for adults, children, parents and teachers.

There are over 100 different types of atoms, and materials can be classified into elements, compounds, and mixtures based on their atomic composition.

This video excerpt from NOVA's "Hunting the Elements" examines how elements come together in chemical reactions.

Dalton’s atomic theory was the first theory of atoms and their properties. You will learn about the postulates and limitations of the theory here.

Promethium, one of the rarest and most mysterious elements in the periodic table, has finally given up some crucial chemical secrets ...