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18 Cards in this Set
- Front
- Back
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Energy
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The ability to do work.
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Work
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The force applied to an object times the distance that the object travels parallel to that force.
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Heat
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energy that is transferred as a consequence of temperature differences
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Hypothesis
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an educated guess that attempts to explain some aspect of the world around us.
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Theory
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a hypothesis that is confirmed by more rigorous experimentation
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Scientific law
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An educated guess that has been confirmed over and over again by experimentation.
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The First Law of Thermodynamics
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Energy cannot be created or destroyed. It can only change form.
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Potential energy
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Energy that is stored.
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Kinetic energy
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Energy that is in motion.
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Joule
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In the metric system, energy is measured in this unit....
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Fahrenheit
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temperature unit (abbreviated as °F).
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Absolute temperature scale
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Since you can never get to or go below 0 Kelvin, the Kelvin temperature scale is often called the _______________.
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calorie
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The amount of heat necessary to warm one gram of water one degree Celsius.
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“Δ” symbol
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Frequently used in chemistry. It is the Greek capital letter “Delta,” and it means “change in.” So whenever you see this symbol in front of a variable, it means you are looking for a change in that variable.
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Specific heat
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The amount of heat necessary to raise the temperature of 1 gram of a substance by 1 degree Celsius.
In other words, it tells how easy it is to heat up a substance. |
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Calorimetry
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The experimental process that chemists use to actually measure heat.
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Calorimeter
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Consists of an insulated container that holds a known mass of water. The temperature of the water is constantly measured by a thermometer, and there is usually a rod that stirs the water to keep the heat distributed evenly.
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Calorimetry equation
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-q object = q water + q calorimeter
It tells us that any heat gained by the calorimeter and water must be lost by the object placed in the calorimeter. |
