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chapter 15 vocab kg
science
| Question | Answer |
|---|---|
| type of matter with a fixed composition | substance |
| if all the atoms in a substance have the same identity that substance is an element | element |
| is a substance in which the atoms of two or more element s are combined in a fixed proportion | compound |
| a mixture in which different material scan be distinguished easily is called a heterogeneous mixture | heterogeneous mixture |
| example a soda | homogeneous mixture |
| is a homogeneous mixture of particles so small that they cannot be seen with a microscope and will never settle to the bottom of their container | solution |
| is a type of mixture with particles that are larger than those in solutions but not heavy enough to settle out | colloid |
| scattering of light | Tyndall effect |
| heterogeneous mixture containing a liquid in which visible particles settle | suspension |
| can observe without changing the identity of the substances that make up the material is a physical property | physical property |
| a change in size shape or state of matter | physical change |
| process for separating substances in a mixture by evaporating a liquid and re-condensing its vapor | distillation |
| is a characteristic of a substance that indicates whether it can undergo a certain chemical change | chemical property |
| a change of one substance to another is a | chemical change |
| the mass of all substances that are present before a chemical change | law of conservation of mass |
Created by:
MrBig86
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