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chapter 2 vocabulary
vocabulary from chapter 2
| Term | Definition |
|---|---|
| pure substance | matter that has the same composition. |
| element | is a substance that cannot be broken down into simpler substances. |
| atom | is the smallest particle of an element. |
| compound | is a substance that is made from two or more simpler substances and can be broken down into those simpler substances. |
| heterogeneous mixture | the parts of a mixture are noticeably different from one another. |
| homogeneous mixtures | the substances are so evenly distributed that is it difficult to distinguish one substance in the mixture from another. |
| soulution | when substances dissolve and from a homogeneous mixture |
| suspension | is a heterogeneous mixture that separates into layers over time. |
| colloid | contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension. |
| physical property | is any characteristic of a material that can be observed or measured without changing the composition or the substance of the material. |
| viscosity | is the tendency of a liquid to keep from flowing |
| conductivity | a materials ability to allow heat to flow . |
| malleability | the ability of a material to be hammered without shattering |
| hardness | the resistance of a mineral to scratching |
| melting point | substance changes from a solid to a liquid |
| boiling point | temperature at which a substance boils |
| density | the ratio of a materials mass to its volume |
| physical propertie | any characteristic of a material that can be observed or measures without changing the composition of the substances in the material |
| physical change | a change that occurs when some properties of a material change but the substances in the material stay the same |
| filtration | is a process that separates materials based on their size |
| distillation | is a process that separates the substances in a solution based on their boiling points |
| chemical propertie | is any ability to produce a change in the composition of matter |
| flammability | a materials ability to burn in the presence of oxygen |
| reactivity | is how a substance combines chemically with other substances |
| chemical change | occurs when a substance reacts and forms one or more new substance |
| precipitate | any solid that forms and separates from a liquid mixture |
Created by:
logan.bates
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