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A catalyst increases the rate of the reaction because:
They provide an alternative energy pathway that has a lower activation energy
This means that more particles hav...
Reduction: loss of oxygen (or gain of electrons)
Heat is a form of energy - the more heat a particle has, the more energy it has, and so the faster it moves. This increases the number of collision is a set period of time, whilst also increasing the numb...
Giant covalent structures are made up of many covalent bonds between atoms. They have high melting points because it takes a lot of energy to break the strong covalent bonds between the a...
Persists in the environment/soil/water. Enters the food chain and builds up the higher up the chain you move. Can enter human tissue eventually.
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