Substances can exist in three states of matter - solid, liquid and gas. Substances can change states. To change the state of a substance energy must be transferred to, or from, the substance.

After viewing a model of salt, students help develop models for the processes of salt dissolving, water evaporating to form a gas, and salt re-forming as a crystal. The focus is that matter, whether ...

The proposed $420 million plant is poised to advance Tanzania energy sector by converting natural gas into diesel and jet ...

The Minister of Energy and Green Transition, John Abdulai Jinapor, says the country has to transition from liquid fuel to ‘gas-to-power’ as part of measures to deal with the cost of liquid fuel ...