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### 25 Cards in this Set

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 The transfer of heat by direct contact between two objects is? conduction The transfer of heat by electromagnetic waves is? radiation Latent heat given off by a substance as it changes from a liquid to a gas is called heat of? vaporization In thermodynamics, the amount of disorder in a system is called? entropy The first law of thermodynamics states that the total of the mass and energy in a system is? constant The process of a gas returning to the liquid state is called? condensation A device that measures the change in the thermal energy of a material is called? calorimeter Name the three factors affecting the amount of thermal energy of an object. 1.Temperature of the object 2.Mass of the object 3. Specific heat of the substance How do the molecules of an object move as the object is heated? more rapidly What is the term for the amount of heat that must be added to a certain mass of a particular substance in order to raise its temperature by 1 degree? specific heat What temperature scale assigns the value of 0 degrees to the freezing point of water and 100 degrees to the boiling point? celsius What is the most scientific principle showing the necessity for an act of creation? the second law of thermodynamics What is the "hidden" heat absorbed or released when a substance undergoes a change of state? latent heat When a liquid changes into a solid, the temperature at which this occurs is called freezing point Heat does not exist unless ________ is being transferred. thermal energy What do we call a special state of matter that exists where temperatures are too high for matter in its ordinary state to exist? plasma The transfer of heat through moving fluids is called? convection the temperature scale which measures absolute temperature Kelvin The internal energy of an object due to the random motions of its individual molecules is known as? thermal energy Liquids which evaporate rapidly are said to be? volitile The quantity of heat required to raise the temperature of 1 gram of water 1 degree C; based on the specific heat of water calorie A device that measures temperature is called? a thermometer The branch of physics that deals with heat energy is called? thermodynamics The point at which the amount of liquid water changing into a gas equals the amount of water vapor returning to the liquid state saturation The heat required to change a given mass of a solid already at its melting point into a liquid without changing its temperature is called the heat of_____________? fusion