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15 Cards in this Set
- Front
- Back
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Kinetic Theory |
All matter is composed of small particles that are in constant and random motion. |
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dissolving |
particles dissolved in a solution solute is dissolved in a solvent. |
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solute |
a substance whose particles are dissolved solution (solvent) |
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solvent |
substance in which the solute dissolves |
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Factors that affect dissolving rate |
Temperature-higher dissolves faster Particle size-smaller dissolves faster Agitation-more mixing dissolved faster |
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saturation |
solution contains as much solute as the solvent can hold at a given temperature. |
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evaporation |
A change from a liquid to a gas at a temperature that is lower than theboiling point. Takes place only at the surface when some of the molecules are able to escape the liquid. |
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distillation |
A process used toseparate dissolved solids from a liquid, which is boiled to produce a vaporthat is then condensed into a liquid |
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Density |
ratio of mass to volume |
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float sink |
Density less than 1g/ml Density greater than 1g/ml |
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plasma |
When a gas is heated to extremely high temperatures, as in the case of the sun, it enters this state |
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Phase change |
matter goes from one state to another. reversible physical change Energy is either absorbed or released |
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Evaporation and boiling |
matter goes from liquid to gas in both of these processes. |
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heating curve |
A graph of temperature against time. The temperature goes up as long as the heating continues. However, there are two horizontal flat parts to the graph. These happen when there is a change of state. The plateaus are also called phase changes. |
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Factors that affect Solubility |
Temperature-increase more solute can dissolve Pressure Polar vs non-polar-Like dissolves like water is polar oil is non polar |
