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2. site where a substrate binds and chemical reaction occurs.
5. negatively charged particle.
7. the molecule that the enzyme reacts with.
10. a liquid that is able to dissolve a solid.
11. a substance that is dissolved in a solution.
12. the membrane enclosed organelle within a cell.
13. electrons are not shared evenly over the covalent bond.
16. a state of balance among all the body systems needed for the body to survive and function correctly.
17. bond common type of chemical bond in organisms.
18. a fundamental item that can't be easily broken into smaller pieces.
19. bond a chemical bond formed when one or more electrons to another atom.
20. is a particle of matter that uniquely defines a chemical element.

1. made up of one or more atoms.
3. bond formed by equal sharing of electron.
4. one or two more atoms with the same atomic number.
6. chemical elements combined in a fixed ratio.
8. mixture of solvent and solute molecules.
9. a subatomic particle found in the nucleus of every atom expect that of simple hydrogen.
14. energy the minimum amount of extra energy required by a reacting molecule to get converted into product.
15. reaction breaking chemical bonds between reactants molecules and forming new bonds.