A compound is when two or more elements are joined together by a bond which forms when they share electrons or move them between each other
Chemical properties of a substance are a way of measuring its reactivity an the way it interacts with other atoms to form compounds.
Elements compounds and mixtures are all unique combinations of different atoms in different ways.
Atoms make up all matter around us, they are the smallest part of all things. Atoms in the periodic table all have different numbers of protons and are known as elements and they can be combined to make compounds and molecules