click below
click below
Normal Size Small Size show me how
Elements&Compounds
vocab for science unit 5
| Question | Answer |
|---|---|
| Element | A pure substance that cannot be broken down into a simpler substance. |
| Pure Substance | A substance made of one type of atom (one ingredient) |
| Metal | Elements that are shiny and are good conductors of thermal energy or electric current; most metals are malleable and ductile |
| Nonmetal | Elements that are dull and are poor conductors of thermal energy and electric current |
| Metalloid | Elements that have properties of both metals and nonmetals; sometimes referred to as semiconductors |
| Compound | A pure substance composed of two or one elements that are chemically combined |
| Mixture | A combination of two or more substances that are not chemically combined |
| Colloid | A mixture in which the particles are dispersed throughout but are not heavy enough to settle out |
| Chemical Equation | A shorthand description of a chemical reaction using chemical formulas and symbols |
| Subscript | A number written below and to the right of a chemical symbol in a chemical formula |
| Coefficient | A number placed in front of a chemical symbol or formula; used to balance a chemical equation |
| Solution | A mixture that appears to be a single substance but is composed of particles of two or more substances that are distributed evenly amongst each other |
| Solvent | The substance in which a solute is dissolved to form a solution |
| Solute | The substance that is dissolved to form a solution |
| Concentration | A measure of the amount of solute dissolved in a solvent |
| Solubility | The ability to dissolve in another substance; more speficially, the amount of solute needed to make a saturated solution using a given amount of solvent at a certain temperature |
| Suspension | A mixture in which particles of a material are dispersed throughout a liquid or gas but are large enough that they settle out |