Biology

4. the interatomic linkage that results from the sharing of an electron pair between two atoms.
8. basic unit of a chemical element
10. a type of chemical bond where a pair of electrons is unequally shared between two atoms due to differences in their electro-negativities.
12. a type of chemical bond that is formed when electrons are shared equally between two atoms.
13. the binding or attraction between dissimilar molecules, atoms, surfaces, or substances.
14. a subatomic particle of about the same mass as a proton but without an electric charge

1. a substance whose atoms all have the same number of protons
2. a stable subatomic particle occurring in all atomic nuclei
3. a form of chemical connection in which one atom loses valence electrons and gains them from another.
5. a thing that is composed of two or more separate elements
6. a molecule in which one end of the molecule is slightly positive, while the other end is slightly negative.
7. the sticking together of particles of the same substance.
9. atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
11. members of a family of an element that all have the same number of protons but different numbers of neutrons.