| Term | Definition |
| products | substances you end up with after chemical reactions take place |
| reactants | substances you start out with at the beginning of chemical reactions |
| chemical reaction | process in which reactants are converted into products |
| chemical change | process of forming a new chemical substance. (gas, heat, light or ppte may be formed) |
| rate of reaction | rate at which a new chemical is formed |
| temperature | rates of reaction are generally faster at higher temperatures & slower at lower temps. |
| surface area | the greater the surface area exposed the faster the reaction |
| concentration | the higher the concentration, the faster the reaction |
| catalyst | they make reactions go faster without being used up themselves |
| atom | smallest part of a chemical element. Made of a nucleus & surrounded by electrons |
| neutron | neutral sub-atomic particle, found in the nucleus of an atom |
| proton | positively charged sub-atomic particle, found in the nucleus |
| electron | negatively charged sub-atomic particle, found outside of the nucleus |
| oxidation | process in which a substance loses one or more electrons |
| reducing agent | substance that loses electrons |
| reduction | process in which a substance gains one or more electrons |
| oxidizing agent | substance that gains electrons |
| redox reaction | chemical reaction in which oxidation & reduction occur together involving an electron transfer |
| activity series | a list of how well metals give up electrons |
| corrosion | the process of a metal being chemically eaten away |
| combustion reaction | chemical reaction in which a substance combines with oxygen to produce heat and light |
| complete combustion reaction | combustion reaction that occurs when the supply of oxygen is plentiful |
| hydrocarbons | compound made of hydrogens and carbon. They are fuels used in combustion reactions. |
| fire triangle | 3 factors needed for a fire to start are oxygen, heat, fuel |
| global warming | is a negative effect of combustion. it is the increase in the average temperature of Earth's atmosphere |
| incomplete combustion | when there is less than abundant supply of oxygen. In this case not all of the carbon is converted into carbon dioxide. Some is converted into carbon monoxide, & soot |