Elements, Atoms and Compounds
- Created by: Lara-Fabiana
- Created on: 21-12-15 14:10
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- Elements, Atoms and Compounds
- All materias are made up of one or more elements.
- An element is a substance that cannot be broken down into other substances.
- There are 92 elements that exist naturally.
- Scientists have made a few more.
- The Periodic Table lists all the elements.
- Every element has its own chemical symbol.
- Every element is made up of one type of atom. All the atoms of an element are the same.
- An atom is the smallest part of an element that can exist.
- The atoms of one element are different to the atoms of all other elements.
- The properties of a substance are the properties of many atoms, not just a single atom.
- The properties of a compound are different to the properties of the elements that it is made from.
- A compound is a substance made up of atoms of two or more elements, strongly joined together.
- A molecule is a group of two or more atoms atoms that are strongly joined together.
- A chemical formula shows the relative number of atoms of each element in a compound.
- All materias are made up of one or more elements.
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