Matter is made up of very small parts called atoms. Atoms can combine in different numbers and in different ways to make different molecules. Atoms and molecules make up all of the different ...

It highlights that everything in the world is made up of atoms, which combine to form molecules. There are over 100 different types of atoms, and materials can be classified into elements ...

View the video below to see what you and your students will do in this lesson. Because substances are made up of different atoms and molecules, they react in characteristic ways. Production of a gas, ...

So now an atom is the smallest particle of an element. There are over one hundred different elements and these are all made of atoms. Presenter: OK. Well, before we get into this further ...

So now an atom is the smallest particle of an element. There are over one hundred different elements and these are all made of atoms. Presenter: OK. Well, before we get into this further ...