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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 |