Term | Definition |
reactant | starting substances in a chemical reaction |
coeffiecient | number placed in front of element symbol or chemical formula in a equation |
types of chemical reaction | synthesis, decomposition, combustion, single replacement, and double replacement |
synthesis | two or more substances combine to form a compound |
decomposition | compound splits two form two or more substances |
single replacement | one element replaces another in a compound |
double replacement | negative ions in two compounds switch places, from two new compounds |
combustion | chemical reaction in which a substance combines with oxygen and releases energy |
activation energy | the minimum amount of energy needed to start a chemical reaction |
catalyst | substance that increases reaction rate by lowering activation energy of reaction |
inhibitor | substance that slow, or even stops, a chemical reaction |
polar molecule | molecule with a slightly negative end and a slightly positive end |
solubility | maximum amount of solute that can dissolve in a given amount of solvent at a given temperature and pressure |
acid | substance that produces a hydronium ion when dissolved in water |
base | substance that produces hydroxide ions when dissolved in water |
pH | inverse measure of the concentration of hydronium ions in a solution |
indicator | compound that changes color at different pH values when it reacts with acidic or basic solutions |
organic compound | chemical compound that contains carbon atoms usually bonded to at least one hydrogen atom |