click below
click below
Normal Size Small Size show me how
Unit 1 Chemistry
| Question | Answer |
|---|---|
| atom | basic unit of matter |
| electron | negatively charged particle; located on outside of nucleus |
| element | substance consisting entirely of one type of atom |
| compound | substance formed by the chemical combination of two or more elements in definite proportions |
| molecule | smallest unit of most compounds |
| cohesion | attraction between molecules of the same substance |
| adhesion | attraction between molecules of different substances |
| monomer | small unit that can join together with other small units to form polymers |
| polymer | large compound formed from combinations of many monomers |
| monosaccharides | single sugar molecule |
| polysaccharides | large molecule formed from monosaccharides |
| chemical reaction | reaction process that changes one set of chemicals into another set of chemicals |
| reactant | element or compound that enters into a chemical reaction |
| product | element or compound produced by a chemical reaction |
| catalyst | substance that speeds up the rate of a chemical reaction |
| enzyme | protein that acts as a biological catalyst |