c101_f10_1103 - Energy transfer for physical processes For...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Energy transfer for physical processes For physical processes, we will focus on kinetic energy and thermal energy . Nanoscale pictures relating kinetic molecular theory, kinetic energy, and thermal energy: Figures 6.5, 6.6, and p. 189. For chemical processes, we will additionally study how chemical potential energy relates to thermal energy. In CHEM 103, chemical potential energy will also be related to electrical energy. The two main concepts you need to apply are 1. conservation of energy 2. mole ratio The main units and conversions you need are 1. 1 calorie = 4.184 Joules, 1 cal = 4.184 J 2. kilo = 1000, 1 kilojoule = 1 kJ = 1000 J
Background image of page 1

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

View Full DocumentRight Arrow Icon
Chemistry 101 Fall 2010 2 Conservation of Energy Energy can neither be created nor destroyed. The total energy of the universe is constant. (Law of Conservation of Energy, First Law of Thermodynamics) Example : A hot bar of copper at 100 ° C is placed into cold water at 4.0 ° C. What is the final temperature of the bar and water? Internal energy of each substance (kinetic and thermal energy) Heating (heat) : the transfer of thermal energy between substances with different temperatures when they are in contact with each other.
Background image of page 2
Chemistry 101 Fall 2010 3 Need to know how much energy is needed to change the temperature of each substance (the copper and the water). Heat capacity
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/05/2011 for the course CHEM 101 taught by Professor Scottnickolaisen during the Fall '11 term at California State University Los Angeles .

Page1 / 11

c101_f10_1103 - Energy transfer for physical processes For...

This preview shows document pages 1 - 4. Sign up to view the full document.

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