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biologych2voc2/4
| Question | Answer |
|---|---|
| Cohesion | attraction between molecules of the same substance |
| Adhesion | force of attraction between different kinds of molecules |
| Mixture | materials composed of two or more elements or compounds that are physically mixed together but not chemically combined |
| solution | type of mixture in which all the components are evenly distributed |
| Solute | substance that is dissolved in a solution |
| Solvent | dissolving substance in a solution |
| suspension | mixture of water and non- dissolved material |
| pH scale | Scale with values from 0 to 14, used to measure the concentration of H + Ions in a solution |
| Acid | compound that forms hydrogen ions in solution ;a solution with a pH of less than 7 |
| Base | compound that produces hydroxide ions in solution |
| Buffers | compound that prevents sharp, sudden changes in pH |
| Chemical reaction | process that change, or transforms, one set of chemicals into another set of chemicals |
| Reactant | element or compound that enter into a chemical reaction |
| Product | elements or compounds produced by a chemical reaction |
| activation energy | energy input that is needed for a reaction to begin |
| Catalyst | substance that speeds up the rate of a chemical reaction |
| Enzyme | protein catalyst that speeds up the rate of specific biological reactions |
| Substrate | reactant of an enzyme-catalyzed reaction |
Created by:
amgrace