<span>An element is a substance that cannot be broken into other substances further.An element is composed of one type of atoms all over. Like a molecule can be divided into atoms further. For example, Water is a molecule which is made up of Oxygen (O), Hydrogen (H). Here, Oxygen and Hydrogen are elements and cannot be further broken down into other substances.</span><span />
I think this would answer your question. I did this in school and I only got a few wrong....
Not sure if they are all right but here goes:
1. B
2. C
3. C
4. C
5. B
6.C
7. either A or C