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Science mixtures
notes 1-3
| Term | Definition |
|---|---|
| physical properties | characteristics that can be observed or measured without changing the makeup of the substance |
| examples of physical properties | mass, weight, volume, density, shape, size, color, smell, texture |
| physical change | a change that does not produce new substances |
| a phase change is | a physical change |
| chemical properties | characteristics that can only be observed by changing the makeup of the substance |
| chemical change | a change that produces new substances |
| what happens to the matter in a physical change | the matter is the same. the original matter can be recovered. |
| what happens to the matter in a chemical change | the matter is different. the old matter is no longer present. the original matter can not be recovered. |
| what happens to the particles in a physical change | the particles are simply re-arranged |
| what happens to the particles in a chemical change | the particles of the substance are broken apart, and the atoms are re-arranged into new particles, forming a new substance |
| mixture | two or more substances that have been combined physically not chemically |
| mixtures can be separated by | physical means |
| homogeneous mixture | a mixture in which all substances appear one color |
| heterogeneous mixture | a mixture in which all substances have more than one color |
| filtration | separates bigger particles from smaller particles |
| evaporation | some particles turn to gas and others stay behind |
| distillation | evaporating a a liquid and then condensing it again |
| magnitism | separating a mixture where one substance has magnetic properties |
| solution | a mixture in which one substance is dissolved in another substance |
| dissolve | to mix evenly |
| soluble | able to dissolve in water |
| insoluble | unable to dissolve in water |
| solute | the substance that does the dissolving |
| solvent | the substance in which a solute disolves |
| universal solvant | water |
| polar molecule | a molecule in which one end has a positive charge and the other has a negative charge |
| aqueous solution | a solution where liquid water is a solevent |
| gaseous solution | a solution in which a solid, liquid, or gas is dissolved in a gas |
| solid solution | a solution in which a solid, liquid, or gas is dissolved in a solid |
| stirring | allows solute particles to squeeze in between solvent particles |
| crushing | breaks particles into smaller pieces |
| heating | makes particles move faster and farther apart |
Created by:
hammy1331
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