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chapter 2 chemistry
| Question | Answer |
|---|---|
| mass | a measure of the amount of matter the object contains |
| volume | a measure of the space occupied by the object |
| extensive property | a property that depends on the amount of matter in a sample |
| intensive property | a property that depends on the type of matter in a sample, not the amount of matter |
| substance | matter that has a uniform and definite composition |
| physical property | a quality or condition of a substance that can be observed or measured without changing the substance's composition |
| solid | form of matter that has definite shape and volume |
| liquid | form of matter that has an indefinite shape, flows, yet has a fixed volume |
| gas | form of matter that takes both the shape and volume of its container |
| vapor | describes the gaseous state of a substance that is generally a liquid or solid at room temperature, as in water vapor |
| physical change | some properties of a material change, but the composition of the material does not change |
| mixture | is a physical blend of two or more components |
| homogeneous mixture | is a mixture in which the composition is uniform throughout |
| heterogeneous mixture | A mixture in which the composition is not uniform throughout |
| solution | Another name for a homogeneous mixture is a |
| phase | is used to describe any part of a sample with uniform composition and properties |
| filtration | The process that separates a solid from the liquid in a heterogeneous mixture |
| distillation | a liquid is boiled to produce a vapor that is then condensed into a liquid |
| element | is the simplest form of matter that has a unique set of properties |
| compound | is a substance that contains two or more elements chemically combined in a fixed proportion |
| chemical change | is a change that produces matter with a different composition than the original matter |
| chemical symbol | Each element is represented by a one or two letter |
| chemical property | The ability of a substance to undergo a specific chemical change |
| chemical reaction | One or more substances change into one or more new substances |
| reactant | A substance present at the start of the reaction |
| product | A substance produced in the reaction |
| precipitate | a solid that forms and settles out of a liquid mixture |
| the law of conservation of mass | states that in any physical change or chemical reaction, mass is conserved |
Created by:
holhum
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