Test5_StudyGuide

Test5_StudyGuide - Study Guide for Exam 6(Chapters 9 10 and...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1. Definition of thermal energy Thermal energy is the total energy (kinetic and potential) of all atoms and molecules that make up a substance. 2. Temperature is a measure of average kinetic energy per molecule. Temperature is proportional to the average kinetic energy of molecular motion. 2 1 2 T KE mv =< : The higher temperature the higher average kinetic energy! The higher temperature the faster molecules move in a substance! Important: In a gas consisting of a mixture of the molecules of different masses, all molecules have the same average kinetic energy . It means that heavy molecules move more slowly than lighter molecules. 3. There are three basic temperature scales: The Celsius temperature scale The Fahrenheit temperature scale, and The Absolute temperature scale (or the Kelvin scale). Note: You should know what these scales are and how they are related to each other. What is the absolute zero temperature in Celsius, Kelvin, and Fahrenheit scales? Answer: 0 0 K = -273 0 C = - 459 0 F What is the freezing point of water in Celsius, Kelvin, and Fahrenheit scales? Answer: 273 0 K = 0 0 C = 32 0 F What is the boiling temperature of water in Celsius, Kelvin, and Fahrenheit scales? Answer: 373 0 K = 100 0 C = 212 0 F 4. Heat is the thermal energy transferred from one substance to another due to a temperature difference. What are the units to measure heat energy? Answer: joules (J) and calories (C),
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 4

Test5_StudyGuide - Study Guide for Exam 6(Chapters 9 10 and...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online