BIO 103 Quiz 2

1. In a chemical reaction, the state in which the rate of the forward reaction equals the rate of the reverse reaction
3. A chemical element required for an organism to survive, grow, and reproduce
5. The three dimensional space where an electron is fond 90% of the time
6. The making and breaking of chemical bonds, leading to changes in the composition of matter
7. The capacity to cause change, especially to do work
12. A covalent bond between atoms that differ in electronegativity, such that shared electrons are pulled more closely to the more electronegative atom.
14. A negatively charged ion
15. A subatomic particle with no charge
17. A material resulting from a chemical reaction
18. A positively charged ion

1. the attraction of a given atom for the electrons in a covalent bond
2. A starting material in a chemical reaction
4. A compound resulting from the formation of an ionic bond
8. A subatomic particle with a negative charge
9. elements are those required by an organism in only minute quantities are called ______.
10. A subatomic particle with a positive charge
11. A type of weak chemical bond formed when the partial charge of H in a polar covalent bond is attracted to a partial negative charge in a different atom.
13. Covalent bonds between two atoms that are equally electronegative are called _______.
16. A substance that cannot be broken down into any other substance by chemical reactions