Question | Answer |
what are elements? | substances that can't be seperated or broken down into simpler substances by chemical means |
what is a pure substance? | a sample of matter either a single element or a single compound that has definite chemical and physical properties |
what are the properties of elements? | Melting point, density, conductivities, and reactivity |
what are metals? | elements that are shiny and that conducts heat and electricity well |
what are nonmetals? | elements that conduct heat and electricity poorly |
what are metalloids? | elements that have properties of both metals and nonmetals |
what is a compound? | a substance made of two or more elements that are chemically combined |
what are the properties of compounds? | melting point, density, reactivity, and color |
what is a mixture? | a combination of 2 or more substances that are NOT chemically combined |
what is a solution? | an even mixture (homogeneous) of 2 or more substances.(when the the solute dissolves in the solvent) |
what is the solute? | in a solution, the substance that dissolves in the solvent |
what is the solvent? | in a solution, the substance that the solute dissolves into |
What are some examples of solutions? | dry air, soft drinks, antifreeze, salt, and water |
what is alloy? | solid solutions of metals or nonmetals dissolved in metals (when a solid dissolves into a solid) |
what is concentration? | how much of the solute is in the solvent |
what is solubility? | the ability of 1 substance to dissolve in another at a given temperature or pressure |
what is suspension? | a mixture where the particles settle after a while |
what is a colloid? | a solution in which the particles don't move or separate (gelatin, whipped cream, mayonnaise |