| Question | Answer |
| a quality of a substance that never changes and can be used to identify that substance | Characteristic Property |
| the temperature at which a substance changes from a liquid to a gas | boiling point |
| the temperature at which a substance changes from a solid to a liquid | melting point |
| a change in a substance that does NOT change its identity | physical change |
| a change in which one or more substances combine or break apart to form new substances | chemical change |
| this indicates a substance's ability to undergo a chemical change | chemical activity |
| two or more substances that are mixed together but not chemically combined | mixture |
| a well-mixed mixture that contains at least one liquid | solution |
| a substance made of only one type of matter and having definite properties | pure substance |
| a substance that cannot be broken down into other substances by chemical or physical means | element |
| a substance made of two or more elements that are chemically combined | compound |
| Which of the following IS NOT an example of a characteristic property?
melting point, density, volume, chemical activity, hardness | Volume |
| Which of the following IS NOT a pure substance?
water, air, gold, salt, iron | air |
| Which of the following IS NOT a mixture or a solution?
soil, juice, air, soda, cake, sand, | cake |
| Which of the following IS NOT an element?
gold, hydrogen, carbon dioxide, silver, iron | carbon dioxide |
| Which of the following IS NOT a compound?
water, nitrogen, sugar, carbon dioxide, salt | nitrogen |
| When matter goes through phase change(or change in state),is that a physical change or chemical change? | physical change |
| True or False...
Earth, air, fire and water are good examples of (chemical) elements. | FALSE!!!! |
| Which of the following classifications should include water: pure substance, mixture, element, compound | pure substance and compound |
| What are the characteristics of a mixture? | -Two or more pure substances blended together
-relatively easy to separate
-usually solids and gases
-not chemically combined |
| What are the characteristics of a solution? | -a very well-mixed mixture
-contains at least one liquid
-more difficult to separate
-not chemically combined |
| Are phase changes (solid to liquid or liquid to gas) physical or chemical changes? | physical changes |
| Did you study your chemistry classification chart? | If you said "yes"... GREAT!
If you said "no"... GO STUDY IT! |
