1.1 A COMPOUND CONTAINS 2 OR MORE ELEMENTS JOINED TOGETHER.
1.1.1 THE NAME OF THE COMPOUND TELLS YOU THE ELEMENT THAT ARE IN IT.
220.127.116.11 COMPOUNDS THAT ARE MADE FROM 2 ELEMENTS ALWAYS HAVE A NAME WHICH ENDS IN IDE.
2 ELEMENTS ARE SIMPLE SUBSTANCES WHICH CANNOT
BE SPLIT UP BY CHEMICAL REACTIONS.
2.1 ATOMS ARE THE SMALLEST PARTICLES OF AN ELEMENT
2.1.1 Atoms of an element are all the same.
18.104.22.168 Compounds can react chemically by mixing them with other chemicals, or by
using heat or electricity. You can tell that a chemical reaction has occurred if there
is a colour change or when a gas is given off
22.214.171.124.1 Most chemical reactions also involve an energy change. This is usually
in the form of heat, but can also involve light being given off, for
example, in burning (combustion).