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Pershing Chapter 3
Pershing 3--Elements, Compounds and Mixtures
Question | Answer |
---|---|
What kinds of changes need to happen to break a compound into its original elements? | Chemical Changes |
Flammability is an example of what kind of property? | chemical property |
When do compounds not form? | after a physical change |
A property that does not depend on the amount of the element is what? | characteristic property |
What is it called when 2 or more elements chemically bond together? | a compound |
What is an element? | a pure substance that cannot be further broken down |
What is a pure substance? | substance where there is only one type of particle |
What is a metalloid? | element that has both metal and nonmetal properties |
What is brittle? | something that is not easy to work with becaus it breaks easily |
When putting salt and water in a jar--which is the solvent and which is the solute? | solvent is water salt is the solute |
What happens in a mixture? | substances come together but keep their original properties |
What does soluble mean? | a substance is able to dissolve |
What is a mixture consisting of "medium-sized' particles? | a colloid |
What is a mixture? | 2 or more substances that do not chemically combine--salt and pepper |
What is a measure of the amount of solute in a solvent? | concentration |
What is a mixture where large particles settle out of the mixture if left alone? | suspension |
What process separates a mixture based on boiling points? | distillation |
What is a solution? | mixture in which tiny particles are more or less evenly dispersed throughout a liquid or gas |
What is the process used to separate a mixture? and what kind of change is it? | filtration and a physical change |
a shiny element that does not conduct electricity and is brittle is a _______. | nonmetal |
a shiny element the can conduct electricity and is brittle is a ________. | metalloid |
a shiny element that can conduct electricity and is malleable is a ________. | metal |