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35 Cards in this Set
- Front
- Back
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who was the Celsius scale named after?
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Anders Celsius
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what does BTU stand for?
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British thermal unit
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what is specific heat?
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the amount of heat that must be added to a certain mass of a particular substance in order to raise the temperature by 1 degree
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what is thermal energy
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internal energy due to the random motion of its individual molecules
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what is heat?
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the transfer of thermal energy from an object of higher temperature to an object of lower temperature
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what does BTU stand for?
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British thermal unit
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who invented the fahrenheit scale?
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Daniel Fahrenheit
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what is a calorie?
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one unit used to measure thermal energy and heat
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who was the Kelvin Scale named after?
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Lord Kelvin
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what is the melting point?
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the temperature at which melting occurs
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what is merely a state of lower thermal energy?
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Cold
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what is entropy?
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amount of disorder in a system
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what are the 3 factors that affects the amount of energy that an object contains?
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temperature, mass, and type of a substance
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state the 2nd law of thermodynamics
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heat and other natural processes in a system tend to go only on way, toward less usuable energy and greater disorder
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define melting
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the changing of a solid into a liquid
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what is volatile?
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liquids which evaporate rapidly
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what is the freezing point?
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the temperature at which freezing occurs
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define condensation
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the process of a gas changing into a liquid
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define freezing
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the changing of liquids into a solid
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heat flows only from what?
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warmer objects to cooler objects
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what are solutes?
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substances which dissolve in a liquid
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what is plasma?
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special state of matter that exists where temperatures are too high for matter in it ordinary states to exist
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what is heat of fusion?
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latent heat required to change a given mass of a solid into a liquid without changing its temperature
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what is evaporation?
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change of a substance froma liquid into a gas
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what is sublimation?
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skip the liquid and state and change directly in a gas
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what is conduction?
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heat transferred from one object to another
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what are convection currents?
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currents within the liquid caused by heated fluid rising and cooler fluids sinking
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what is nonvolatile?
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liquids which evaporate slowly
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define boil
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when evaporation has occurs throughout the liquid
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what is radiation?
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transfer of heat through space in the form of electromagnetic waves
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what is convection?
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heat transferred by moving fluids
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what is thermodynamics?
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the branch of physics dealing with heat and energy
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state the 1st law of thermodynamics
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the total amount of energy in a system is constant
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what is the colorimeter?
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used to find the change in thermal energy of a material
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what is the boiling point?
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the temperature at which substances have begun to boil
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