| A | B |
|---|
| Polar molecule | a molecule in which the charges are unequally distributed |
| Hydrogen Bond | the attraction between a hydrogen atom with a partial positive charge and another atom with a partial negative charge |
| Cohesion | an attration between molecules of the same substance; in water this is why insects can stride across the top of a pond |
| Adhesion | an attraction between molecules of different substances |
| Heat capacity | the amount of heat energy required to raise the temperature of a substance |
| Mixture | a material composed of 2 or more elemnets or compounds |
| Solution | a mixture in which all the components are equally distributed |
| Solute | the substance that gets dissolved in a solution |
| Solvent | The substance in which the solute gets dissolved in |
| Suspension | a type of mixture that contains water and undissolved particles |
| pH Scale | a measurement system that indicates the concentration of H+ ions in a solution |
| Acid | any compound that forms H+ ions in solution |
| Base | a compound that produces OH- ions in solution |
| Polymerization | a process in which large molecules are formed by joining smaller ones together |
| Carbohydrates | Main source of energy in living things |
| Lipids | Fats that are used to store energy in living things |
| Nucleic Acids | store and transmit hereditary, or genetic, information |
| Proteins | control the rate of reactions and regulate cell processes, form cell structures, transport substances in and out of cells, and help fight disease. |
| Amino acids | make proteins |
| Chemical reaction | process that changes or transforms one set of chemicals into another |
| Reactants | the elements or compounds that enter a chemical reaction |
| Products | the elemnets or compounds that are produced by a chemical reaction |
| Activation energy | the energy that is required to start a chemical reaction |
| Catalyst | a substance that speeds up a chemical reaction |
| Enzymes | a biological catalyst; it speeds up chemical reactions in cells |
