Structure of Atom
A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.
Atomic Structure
All matter is made of particles.
Atoms are the simplest particles in an element.
Each element is made of only one type of atom.
Atoms cannot be divided without changing the chemical nature of the substance.
History of Atomic Theory
A lot of people contributed in different ways to help develop our current understanding of atomic structure, starting all the way back in Ancient Greece.
The History of Atomic Theory
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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