The States of Matter Mod.H U.1 L.5

What is the Matter? States of matter – Physical forms in which matter can exist Matter – made up of tiny particles – atoms, molecules

Kinetic Theory of Matter States that matter is made of tiny particles (atoms or molecules), which are in constant and random motion. Proof – Brownian Motion Explains different states of matter and properties

State is determined by… Motion of particles Speed of particles Energy content Distance apart Amount of attractive forces between particles

1. Solids - 2 Categories: Crystalline – Orderly 3-dimensional repeating arrangement of particles in rows- e.g. salt, ice, diamonds

2nd type … Amorphous – Particles in no particular order or pattern -e.g. wax, rubber, glass http://www.edinformatics.com/interactive_molecules/graphite.htm

Compare

Properties of Solids Has definite shape Has definite volume Particles very close to each other Very strong attraction between particle Particles vibrate in place Not easily compressed

2. Liquids- 2 important properties: Surface tension – A Force….

2. Viscosity – A liquid’s resistance to flow. Which flows faster 2. Viscosity – A liquid’s resistance to flow. Which flows faster? Honey, water, syrup?

Liquids used in hydraulic brakes. http://auto.howstuffworks.com/auto-parts/brakes/brake-types/brake1.htm

Properties of Liquids Has no definite shape Has definite volume Particles close to each other No definite arrangement Weaker attraction between particles, than in solids Particles move around Are more compressible

3. Gases Are also a fluid! Has no definite shape Has no definite volume Particles far apart from each other Weak forces of attraction between particles Particles possess more energy Particles move around freely Are most compressible

4. Plasma No definite shape No definite volume Particles are broken apart or ionized Gases at very high temperature e.g. lightening, fire, the stars, aurora borealis, florescent bulbs, plasma ball http://youtu.be/8nR24XqGSGE 

5th State of Matter? Bose-Einstein Condensate What is it? Find out. Write a short paragraph. Due next class!

6th State of Matter? 7th?? More??? Fermionic Condensate - A superfluid phase formed by special particles, at very low temperatures What about…. Liquid Crystals - ?? Dark Matter - ???

Check this out: http://www.chem.purdue.edu/gchelp/atoms/states.html DO: All questions in L5. Due ____ http://www.middleschoolchemistry.com/multimedia/chapter2/lesson5