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30 Cards in this Set
- Front
- Back
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What is convection?
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The transfer of heat by air currents. Its the second most common way patients loose heat in the OR.
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What is radiation?
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The transfer of heat in electromagnetic waves. Its the number one way patients loose heat in the OR.
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What is conduction?
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The transfer of heat directly from one moluecule to another. A patient loosing heat to the cold OR table.
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What is a BTU (British thermal unit)?
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The amount of heat needed to raise the temperature of 1 lb of water 1 degree F.
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What is a kilocalorie?
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1000 calories, it is used when measuring the heat energy of the body and for nutritional values of food.
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What is convection?
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The transfer of heat by air currents. Its the second most common way patients loose heat in the OR.
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What is radiation?
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The transfer of heat in electromagnetic waves. Its the number one way patients loose heat in the OR.
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What is conduction?
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The transfer of heat directly from one moluecule to another. A patient loosing heat to the cold OR table.
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What is a BTU (British thermal unit)?
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The amount of heat needed to raise the temperature of 1 lb of water 1 degree F.
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What is a kilocalorie?
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1000 calories, it is used when measuring the heat energy of the body and for nutritional values of food.
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What is a Joule?
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A unit used to compare work in various energy systems.
J = 1/4.18 cal 1 cal = 4.18 J |
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What is a calorie?
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The amount of heat necessary to raise the temperature of 1gram of water by one degree celcius.
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What is Force (F)?
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Force (F) = mass (m) x acceleration (a)
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What is a Newton?
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It is the force required to move a 1 kg mass (m/s)
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What is a dyne?
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The force required to move a 1gram mass (1cm/s)
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What is the law of conservation of matter?
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It states that during a chemical reaction matter is neither created nor destroyed.
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What is the Law of conservation of energy?
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It states that energy is neither created nor destroyed during a chemical reaction.
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Differentiate between exothermic and endothermic.
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Exothermic is heat produced
Endothermic is heat absorbed (heat must be added) |
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What is heat of vaporization?
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The number of calories required to change 1 gram of liquid to a gas at the boiling point.
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What is a boiling point?
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The temperature at which a liquid becomes a gas.
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What is heat of fusion?
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The number of calories required to change 1gram of solid to liquid at the melting point.
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What are the freezing and boiling point in celsius?
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Freezing = 0 degrees C
Boiling = 100 degrees C |
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What are the freezing and boiling points in fahrenheit?
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Freezing = 32 degrees F
Boiling = 212 degree F |
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Which gases are heavier than air?
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Nitrous oxide and carbon dioxide
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Which gases are lighter than air?
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Nitrogen, helium, and water vapor
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Is oxygen heavier or lighter than air?
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Slightly heavier than air (spec gravity 1.1)
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What is mass?
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mass = density x volume
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What is volume?
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Volume = mass/density
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What is density?
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Density = mass/volume
density = grams per cc or grams per L * it always has 2 units (ie 1.0 g/ml) |
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How do you convert Kelvin to celsius and the reverse?
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K = C + 273
C = K - 273 |
