chemistry

2. - molecular model that
4. - study of matter and energy and the interactions between them
7. - explanation of bonding between two atoms as a result of the overlap of half-filled atomic orbitals.
9. - a lipid that contains no carbon-carbon double bonds.
10. - element 92 with symbol U.
11. - a mixture of pH indicators used to measure pH over a
14. - a substance that forms ions in aqueous solution.
16. - a UN ID used for the transport of dangerous materials.
17. - deoxyribonucleic acd, an organic molecule that codes for proteins.
21. - ionizing electromagnetic radiation with a wavelength between 100 nm and 400 nm. Sometimes called black light.

1. - process in which a liquid changes to a solid.
3. - usually indicated by R, the gas constant is the Boltzmann constant in units of energy per temperature per mole: R = 8.3145 J/mol·K
5. - a solution in which solute concentration is lower than its solubility. All solute present dissolves into the solution.
6. - a volume containing little to no matter (no pressure).
8. - the scattering of a beam of light as is passes through a colloid.
12. either refers to a solution that can dissolve more solute or to an organic compound containing double or triple carbon-carbon bonds.
13. - outer electron most likely to participate in bond formation or a chemical reaction.
15. - a four-digit code used to identify dangerous or flammable chemicals. United Nations Identifier
18. - number of electrons needed to fill the outermost electron shell.
19. - a standard used for comparison in measurements.
20. - unit of mass equal to the mass of one cubic centimeter of water at 4°C.