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Unit 2 Voabulary
Term | Definition |
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Chemical Change | Change of one substance into a new substance |
Chemical Property | Any characteristics of a substance, such as flammability, that indicates whether it can undergo a chemical change |
Colloid | Heterogeneous mixture who's particles never settle |
Compound | Substance formed from two or more elements in which the exact combination and properties of elements is always the same |
Distillation | Process that can separate two substances in a mixture by evaporating a liquid and recondensing its vapor |
Element | Substance with atoms that are all alike |
Heterogeneous Mixture | Mixture such as mixed nuts or a dry soup mix in which different materials are unevenly distributed and are easily identified |
Homogeneous Mixture | Solid, liquid, or gas that contains two or more substances blended evenly throughout |
Law of Conservation of Mass | States that the mass of all substances present before a chemical change equals the mass of all the substances remaining after the change |
Physical Change | Any change in size, shape, or state of matter in which the identity of the substance remains the same |
Physical Property | Any characteristic of a material, such as size or shape, that you can observe or attempt to observe without changing the identity of the material |
Solution | Homogeneous mixture that remains constantly and uniformly mixed and has particles that are so small they cannot be seen with a microscope |
Substance | Element or compound that cannot be broken down into simpler components and maintain the properties of the original substance |
Suspension | Heterogeneous mixture containing a liquid in which visible particles settle |
Tyndall effect | Scattering of a light beam as it passes a through a collid |