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Lecture 9 F 2010 - Lecture 9 Chapter 5 Temperature a...

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Lecture 9: Chapter 5 Temperature: a measure of the _______________________ of individual molecules in matter. The point at which atomic and molecular motion in matter complete stops is _______________. As we shall see, its value differs in the three different temperature-measuring scales. Heat: a form of __________ that flows from one system or object to another because the two are at different temperatures There are three temperature scales: 1. Used in US: 2. Divided into 100 degrees using the decimal system (most countries use this): 3. Starts at absolute zero, so readings are proportional to the actual kinetic energy in a material: The temperature scales have three key measurement points: 1. 2. 3. 1.Melting point of ice: Fahrenheit (know for test): Celsius: (know for test): Kelvin: (do not need to know for test): 273 2.Boiling point of water: Fahrenheit (know for test): Celsius (know for test): Kelvin (do not need to know for test): 373 3.Point at which atomic motion stops: Fahrenheit (do not need to know for test): -459.4 Celsius (do not need to know for test): -273 Kelvin (know for test): The freezing point for water is not included as a key measurement point because it varies between _______________, depending upon its purity, volume, and conditions in the atmosphere. Which is FALSE? a) Temperature is a measure of the average amount of motion of individual molecules in matter b) Heat is a form of energy that flows from one system or object to another because the two are at different temperatures c) The freezing point for water varies is always 32 F.
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