Elements, Molecules & Compounds

Question	Answer
What is an element?	An element is a substance which cannot be broken down into simpler substances by chemical reactions
What is a compound?	A compound is a pure substance consisting of two or more elements that have been chemically combined
How can compounds be formed?	Compounds can be formed by chemically combining: elements, elements & compounds and compounds
What is a molecule?	A molecule is made up of 2 or more atoms of the same kind or different kinds, chemically combined together.
How many types of molecules are there and what are there names?	There are 2 types of molecules and there names are molecules of elements and molecules of compounds.
Define molecules of elements	These consist of a fixed number of one kind of atom only
Define molecules of compounds	These consist of a fixed number of 2 or more different kinds of atoms chemically combined together.

Resource summary

	Created by liamtsheppard about 8 years ago