Bio 101 Ch.2 Part 1

2. two or more atoms held together by covalent bonds
7. a type of covalent bond in which electrons are shared equally between two atoms of similar electronegativity
10. the linking together of like molecules often by hydrogen bonds
15. in a chemical reaction, the state in which the rate of the forward reaction equals the rate of the reverse reaction, so that the relative concentrations of reactants and products do not change with time
16. a measure of how difficult it is to stretch or break the surface of a liquid
17. an atom's dense central core, containing protons and neutrons
18. the number of protons in the nucleus of an atom unique for each element and designated by a subscript

1. the energy that matter possesses as a result of its location or spatial arrangement
3. an energy level of electrons at a characteristic average distance from the nucleus of an atom
4. weak attractions between molecules or parts of molecules that result from transient local partial charges
5. a molecule with an uneven distribution of charges in different regions of the molecule.
6. a chemical bond resulting from the attraction between oppositely charged ions
8. a positively charged ion
9. the attraction of a given atom for the electrons of a covalent bond
11. a material resulting from a chemical reaction
12. the clinging of one substance to another, such as water to plant cell walls, in this case by means of hydrogen bonds
13. the energy associated with the relative motion of objects. Moving matter can perform work by imparting motion to other matter.
14. a subatomic particle with a single positive electrical charge with a mass of about 1.7* 10-24 g, found in the nucleus of an atom