Particle Arrangement September 20, 2010

Opening

Background Information A particle is the simplest part that identifies a substance for atoms this particle is an element for compounds this particle is a molecule

Particle Chart FLU IDS Solid: Table Liquid: My Coffee Gas: Air in the room Observations billions of molecules packed tightly together Billions of molecules with only a little more space between particles Still billions of molecules but have more space Size & Arrangement Movement They move but can only vibrate in place; can’t move around each other FLU Can slide past each other IDS Bounce around the container

INM: Why do liquids flow? A The particles are broadly separated and standing still. B The particles are tightly packed and constantly vibrating. C The particles are loosely arranged and sliding past one another D The particles are widely dispersed and in constant, random motion.

INM What is the difference between the particles in a gas compared to the particles in a liquid? F less massive G more massive H closer together J farther apart

GP: What type of matter does this describe? Why? 1) The particles are tightly packed and constantly vibrating. GP: Which description describes a gas? Why? The particles are loosely arranged and sliding past one another The particles are widely dispersed and in constant, random motion.

GP: Why do gases flow? A The particles are broadly separated and standing still. B The particles are tightly packed and constantly vibrating. C The particles are loosely arranged and sliding past one another D The particles are widely dispersed and in constant, random motion.

What is the difference between the particles in a solid compared to the particles in a liquid? F less massive G more massive H closer together J farther apart

Notecards Student 1 Student 2 Student 3

Example What state of matter? How are the particles arranged? Do they “flow”? What class of matter is it?