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Chem 1-1

Chem Unit Chp 1 Sect 1Vocab

QuestionAnswer
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!
Created by: gdustin