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Science U1
| Question | Answer |
|---|---|
| pure substances | an element or compound |
| mechanical mixture | two or more substances where you can easily see the two different substances |
| solution | one substance (solute) is completely dissolved in another (solvent) and you cannot see the diffrence |
| solute | a substance (g) that can dissolve in a solvent |
| solvent | a substance (usually a liquid in ml) that a solute can dissolve into |
| concentration | the quantity of a solute in a solvent |
| solubility | how well a substance dissolves into solvent |
| viscosity | a fluids internal resistance or friction that keeps it from flowing |
| density | the amount of mass in a given volume |
| pressure | the amount of force exerted on a certain area |
| hydraulic system | a system that uses a liquid as an enclosed fluid |
| pneumatic system | a system that uses a gas as an enclosed fluid |
| Pascal's law | an enclosed fluid exerts pressure in all directions |
| unit of pressure | Pascals (P) |
| 1 Pascal = | 1 Newton of pressure exerted on one square meter |
| saturation | the point at which a solvent cannot dissolve anymore solute |
| matter | can be divided into pure substances and mixturess |
| two types of mixtures are | mechanical mixtures and solutions |
| calculating concentration | grams per milliliter (g/ml) |
| compressable | a trait of a substance at which its particles can be pushed together |
| incompressable | a trait of a substance at which its particles are physically unable to be compressed together |
| compound | combination of two or more elements (ex. oxygen mixed with hydrogen makes water) |
| water, sugar, ammonia are examples of | examples of pure substances |
| homogeneous mixture | two or more of the same substance mixed together together so that they cannot be separated or seen |
| heterogeneous mixture | two or more of a different substances mixed that can be easily seen and can be separated with a filter |
| evaporation is a way of seperating | a solute from a solvent by using heat |
| distillation is a method of | separating a solution of two different liquids depending on their boiling point |
| unit of force | Newton (N) |
| unit of area | meter squared |
| buoyancy | an upward force that is the opposite to gravity |
| insoluble | when a solute cannot dissolve into a solvent |
| temperature | the rate (speed) at which a solute dissolves into a solvent |