Looking for a quick definition?
We’ve got loads of key subject terms in our subject glossaries. There are three ways of finding what you are looking for:
- First click on the letters of the alphabet to browse for terms.
- Select a subject from the drop-down menu above to filter the terms by Subject.
- Or lastly, type the term you are looking for into the search box.
Here are some examples of the kinds of definitions you’ll find on this page.
ratio of atoms is 1 : 4 with a bond angle of 109,50 example CH4
the amount of products that are formed in a chemical reaction when all the reactants react and...
the transfer of heat or energy from areas of higher temperatures to areas of lower temperatures...