User contributions for 180102099
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9 December 2018
- 13:4313:43, 9 December 2018 diff hist +376 N Catalyst Created page with " A catalyst is a substance that can be in a solid, liquid or gaseous form. The aim of a catalyst is to increase the rate of a reaction by lowering the activation enthalp of ..."
- 13:3513:35, 9 December 2018 diff hist +341 N Positive ion Created page with "A positive ion is a molecule that has a non zero charge. This is due to the molecule losing one or more electon(s). This results in a positive charge as there are now more proton..."