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Chapter 4 Vocabulary
| Term | Definition |
|---|---|
| mixture | matter that consists of two or more substances mixed but not chemically combined |
| heterogeneous mixture | substance that does not appear to be the same throughout |
| homogeneous mixture | mixture that appears the same throughout |
| colloid | homogeneous mixture in which the particles are mixed together but not dissolved |
| solution | homogeneous mixture of two or more substances in a single physical state |
| solute | substance that is dissolved in a solution |
| solvent | substance that does the dissolving in a solution |
| soluble | can be dissolved in another material, such as water |
| insoluble | unable to be dissolved in another material, such as water |
| solubility | measure of how much of a solute can be dissolved in a given amount of solvent under certain conditions |
| alloy | a solution of two metals or a metal and a nonmetal that has the properties of a metal |
| pure substance | substance made of one kind of material having definite properties |
| element | simplest type of a pure substance |
| atom | smallest part of an element that has all the properties of an element |
| chemical symbol | shorthand way of representing an element |
| compound | substance made up of molecules that contain more than one kind of atom; two or more elements chemically combined |
| molecule | combination of atoms formed by a covalent bond |
| chemical formula | combination of chemical symbols usually used to represent a compound |
| subscript | number placed to the lower right of a chemical symbol to indicate the number of atoms of the element in the compound |
| chemical equation | expression in which symbols, formulas, and numbers are used to represent a chemical reaction |
| coefficient | number that is placed in front of a symbol or a formula in a chemical equation that indicates how many atoms or molecules of this substance are involved in the reaction |
| Oxygen, Sodium, Carbon, Oxygen, Hydrogen | Ex. of an Elements |
| Na | Symbol for sodium |
| Water,iron, oxygen, carbon dioxide | Ex. of a pure substances |
| iron and sulfur, concrete, salad dressing | Ex. of heterogeneous mixtures |
| salt water,potassium nitrate and water, sugar and water. | Ex. of a solutions |
| milk, toothpaste, whipped cream, suntan lotion | Ex. of colloids |
| Brass | Ex. of an alloy |
Created by:
Mr. Bendele