Glossary

Reset Glossary
mass number (A)

Subject: 

  • Physical Sciences

the sum of the number of protons and neutrons (the nucleons) in the nucleus of an atom. It determines the mass of the element.

Related Terms: 

proton
neutron
nucleus

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Exam practice is essential. Make sure your student has access to practice exam papers for the subjects they take. Make sure the exam papers relate to the correct version of the curriculum.

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Studying should be active. Your child should be making notes, working through examples, doing practice exam papers and testing herself on the sections she is studying.

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Formulae sheets or key concept sheets are useful for quick revision. Get your teenager to stick them on the wall in their room. The more they look at the formulae and key concepts, the more likely...

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Different study methods work for different students. Find out what works for your child so you understand how you can support him or her.

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