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Ch.15
Classification of Matter
| Question | Answer |
|---|---|
| substance | A type of matter with a fixed composition |
| element | A substance that is made up of one type of atom |
| compound | A substance in which the atoms of two or more elements are combined in a fixed proportion |
| mixture | A material made up of two or more substances that can be easily separated by physical means |
| heterogeneous mixture | A mixture in which different materials can be distinguished easily |
| colloid | A type of mixture with particles that are larger than those in solutions but not heavy enough to settle out |
| homogeneous mixture | A mixture in which two or more substances are blended evenly throughout |
| solution | A homogeneous mixture of particles so small that they cannot be seen with a microscope and will never settle |
| tyndall effect | The scattering of light by colloidal particles |
| suspension | A heterogeneous mixture containing a liquid in which visible particles settle |
| physical property | Any characteristic of a material that you can observe without changing the identity of the substances that make up the material |
| physical change | A change in the size, shape, or state of matter of a substance |
| chemical property | A characteristic of a substance that indicates whether it can undergo a certain chemical change |
| chemical change | A change in the identity of a substance |
| law of conservation of mass | The mass of the products before a chemical change will equal the mass of the products after the chemical change has occurred. |
Created by:
nhatton
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