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Intro. To ES
callahan-pnhs-intro to I.S.H. vocab
| Question | Answer |
|---|---|
| What is a pure substance? | It is matter that always has exactly the same composition; an element or compound. |
| What is an element? | It is a substance that cannot be broken down into simpler substances. |
| What is an atom? | It is the smallest particle of an element. |
| What is a compound? | It is a substance that is made from two or more simpler substances and can be broken down into those simpler substances. |
| What is a heterogeneous mixture? | It is a type of mixture in which the parts of the mixture are noticeably different from one another. |
| What is a homogeneous mixture? | It is a type of mixture in which the substances are so evenly distributed that it is difficult to distinguish one substance from another. |
| What is a solution? | It is a mixture that forms when substances dissolve and form a homogeneous mixture. |
| What is suspension? | It is a heterogeneous mixture that separates into layers over time. |
| What is a colloid? | It is a mixture that contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension. |