Nuclear Fusion

Archaeological evidence shows that early humans were controlling and using fire at least 250,000 years ago, and some historians believe that fires have been utilised…

Human Impact on the Earth – Pollution

Planet Earth has varied environments due to the differing temperature, water availability and natural landscapes depending where you are on Earth. The varied conditions affect…

Human Impact on the Earth – Deforestation

Areas like forests and tropical rainforests have millions of different species and are very biodiverse. Biodiversity is specifically the number of different species within an…

Electrical Circuits

Electricity is a source of energy that is used in a multitude of ways in our everyday lives. Since the electricity grid was created, its…

The Rock Cycle

The outer layer of the Earth, the crust, is made of rock. Rocks are solids which are made of grains of minerals which fit together.…

Neutralisation Reactions

Chemical reactions happen between many materials whether they are solids, liquids or gases. This usually involves two or more reactants, their atoms rearranging and making…

Separating Materials

Substances can come in many different forms: solids, liquids, gases, elements, compounds, and mixtures. While elements are pure substances that contain only one type of…

Acids and Alkalis

Whether a material is an element or a compound, materials have chemical and physical properties that can determine how useful they are. Chemical properties are…

Distillation

Substances can come in many different forms: solids, liquids, gases, elements, compounds, and mixtures. While elements are pure substances that contain only one type of…

Chemical Reactions

Materials often change and take a new form. These changes can be caused by different reasons. However, the key is knowing when these changes are…