click below
click below
Normal Size Small Size show me how
E. M. Eq. Vocabulary
| Question | Answer |
|---|---|
| Law of Conservation of Mass | "Mass can neither be created nor destroyed, just changed (in form)." |
| Physical Change | changes affecting the form and physical characteristics of a substance |
| Chemical Change | changes affecting the chemical composition and/or chemical properties of a substance |
| Element | a pure substance and the simplest form of matter |
| Chemical Formula | a way of expressing information about the atoms the make up a particular chemical compound |
| Element Molecule | molecules made up of a single type of element |
| Diatomic Molecule | molecules made up of two of a single type of element |
| Compound Molecule | molecules made up of two or more kinds of elements |
| Chemical Equation | symbolic representation of a chemical reaction |
| Chemical Reaction | process leading to the transformation of one set of chemical substances to another |
| Reactants | substances involved in a chemical reaction as the substances going through the change |
| Products | substances involved in a chemical reaction as the substance formed by the change |
| Coefficient | number in front of a term in a chemical equation that indicates how many molecules take part in the reaction |
| Subscript | number below an atomic symbol that indicates how many atoms there are of an element in a molecule |
| Ionic Compound | chemical compound (molecule) in which ions are held together by ionic bonds |
| Covalent Compound | compound in which atoms share pairs of electrons |
| Metallic Compound | compound containing one or more transition elements |
| Synthesis | deliberate execution of chemical reactions to get one or more product(s) |
| Decomposition | separation of a chemical compound into elements or simpler compounds |
| Single Replacement | chemical reaction in which an element or ion moves out of one compound and into another |
| Double Replacement | chemical process involving exchange of bonds between two reacting chemical species |