A substance that cannot be split into anything simpler.

How many elements found naturally on Earth?

How many elements did the scientists made?

Similar elements have ...................... properties.

Different elements are made of ............................... atoms.

Could you go on cutting a piece of matter into smaller and smaller pieces forever? Who answered ‘yes that matter completely fills its space.

Who said that matter is divided into tiny separate bits – atoms – with empty space between.

Who said that “Each element had its own type of atom”. * Atoms could not be split up.

Who collected evidence from his own investigations, and from other scientists by saying that “matter is made up of atoms”