Matter is made up of small particles called atoms. Atoms can exist on their own or together as molecules. Atoms are very small and around 100,000,000 of them end to end would measure one centimetre.

Remember taking science exams when you were at school? Year 11 pupils across the West Midlands are taking their GCSEs at the moment. We've looked at the type of questions students are likely to be set ...

Find your added subjects in My Bitesize. Companies are trying to save money, improve products, develop new materials and become more efficient. New technologies are developed to positively impact the ...