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Chapter 4 physics notes

by: Rebeca Cotton-Baez

14

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2

Chapter 4 physics notes Phys 100

Rebeca Cotton-Baez
SUNY Potsdam
GPA 3.3
Physical Science
Dr. Lee

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Chapter 4 physics notes including examples and iclicker answers
COURSE
Physical Science
PROF.
Dr. Lee
TYPE
Class Notes
PAGES
2
WORDS
KARMA
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This 2 page Class Notes was uploaded by Rebeca Cotton-Baez on Sunday October 18, 2015. The Class Notes belongs to Phys 100 at State University of New York at Potsdam taught by Dr. Lee in Spring 2015. Since its upload, it has received 14 views. For similar materials see Physical Science in Physics 2 at State University of New York at Potsdam.

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Date Created: 10/18/15
Chapter 4 Core concepts A relationship exists between heat temperature and the motion and position of molecules 1 Temperature Temperature of a substance is de ned by the average kinetic energy of its molecules Boliling 212 degrees F 100 degrees C 373 K Freezing 32 F 0 degrees C 273 K 0 F 18 degrees C 255 K Absolute zero 459 F 273 C 0 K Lowest temperature To nd Fahrenheit from Celsius 41 Tf 95 Tc32 degrees To nd Celsius from Fahrenheit 42 Tc 59 Tf 32 To nd Kelvin from Celsius 43 TkTc273 A In a solid molecules vibrate around a xed equilibrium position and are held in place by strong molecular force B In a liquid molecules can rotate and roll over one another because the molecular forces are not as strong In a gas molecules move rapidly in random free path Kinetic Molecular Theory 0 The basic unit of matter is an atom Common phases of matter on earth under condition of ordinary temperature 0 Slide 1 pictures A is solid B is liquid C is gas Table 41 the shape and volume characteristics of solids liquids and gasses are re ections of their molecular arrangements N Solid Liquid Gas Volume Fixed Fixed Variable Shape Fixed Variable Variable l clicker question answers Question 1 The atom is the basic unit of matter Question 2 which of the following assumptions describe the kinetic molecular theory D all of the above Question 3 Which phase of matter has a xed volume but a variable shape B liquid Question 4 The temperature of a substance is de ned as C average kinetic energy of the molecules of the substance Question 6 Absolute zero is described as C the lowest possible temperature 0 Kelvin Question 5 A 37 degrees Celsius 3 Heat Q 0 De nition a measure of the internal energy that has been absorbed or transferred from another object 0 Q calorie or kcal Measures of heat 0 Calorie energy needed to raise temperature of 1 gram of water 1 degree Celsius o Kilocalorie kca energy needed to raise temperature of 1 kg of water 1 degree Celsius English system 0 British thermal unit BTU energy needed to raise temperature of 1 lb of water 1 degree F 0 Mechanical equivalence 4184 1 Cal or 4184 J 1 kcal Quantity of heat mass speci c heat temp change 44 Cspeci c heat de ned as the amount of heat needed to increase the temp of 1 gram of a substance by 1 degree 0 Unit cg degrees Celsius 0 Water speci c heat 1 calorie gram l clicker questions 7 D heat is the measure of the internal energy that has been absorbed from 1 body and transferred to another body 8B

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