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BYU - PHY S 100 - Class Notes - Week 7

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BYU - PHY S 100 - Class Notes - Week 7

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background image Chapter 12: Properties of Matter States of Matter Solids: do not change volume or shape Liquids: do not change volume but can change shape (container) Gases: can change volume and shape States change with temperature and pressure Plasma: mix of + charged atoms and - charged atoms  o Most common form of matter in universe   Temperature and Changes in State Hypothesis 1: the temperature required to change the state demonstrates the 
strength of the force that keeps material in its state
Hypothesis 2: the stronger the force holding matter's particles together, the higher 
the temperature needed to melt it
 
Density Density = mass/volume Generally, matter is densest as a solid, then as a liquid, then least dense as a gas Water, on the other hand, is an exception. Ice is less dense than water as a  liquid!   Responses of Matter to Forces Compression force: pushes on an object (both sides), compresses its shape
Tension force: pulls on an object (both sides), lengthens/stretches shape
Shear force: pushes on object diagonally, twists shape
 
  Compression 
Force
Tension 
Force
Shear 
Force
Solids Y Y Y Liquids Y Y N Gases Y N N   Color Determined by wave frequency Range of wave frequency for electromagnetic radiation: electromagnetic  spectrum Continuous spectrum: all colors are given off (i.e. the Sun) Discrete spectrum: separate and distinct colors are given off (i.e. hydrogen)   Electrical Conductivity Solid or liquid metals are conductors Ionic conductors: metals that only conduct electricity as molten or when  dissolved in water

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School: Brigham Young University
Department: OTHER
Course: Physical Science
Professor: Patricia Ackroyd
Term: Spring 2017
Tags: matter, properties, and forces
Name: Chapter 12 Notes, Week 7
Description: Properties of matter, the continuous model of matter, responses of matter to forces
Uploaded: 10/13/2017
2 Pages 17 Views 13 Unlocks
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