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Electrons are arranged in different shells (sometimes described as an energy levels) around the nucleus with the innermost shell being filled first and then working outwards. The first shell can hold a ma...
In chemistry we often talk about how 'weak' or 'strong' bonds are. The stronger the bonds are between two atoms, the more (kinetic) energy is required to break them apart. This means that more heat is nee...
This question can be split up into two parts, and uses two key equations: It's always a good idea to look at what information we have been given already, and work out what we can do with it!...
Vegetable oils are reacted with hydrogen at 60 degrees Celcius in the presence of a nickel catalyst. This process is called hydrogenation. Vegetable oils contain carbon to carbon double bonds meaning they...
Increase in temperature causes a decrease in soulubility of gases so loss of oxygen and therefore fish die due to a loss of oxygen
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