3 States of Matter Ch. 2 Section 1 pp 32-35 Courtesy of Mark Hillbom – Hart Middle School

What does Temperature have to do with changes in the states of matter? Lets watch the video clip to find out!!

There are 4 states of matter although we focus on the 3 states of matter. Solid Liquid Gas Solid -------                                                   Liquid -------                                                                                                -------

Solid p. 33 A substance which has definite shape and definite volume. The molecules are slow moving (vibrate in place). A solid has boundaries and is not easily compressed. Lazy!! Lounge Chair “solid” Lawn Mower “solid”

Amorphous Solid p. 33 A type of solid having molecules which move faster and is structurally less rigid than a normal solid.

Very orderly arrangement Crystalline Solid p. 33 Very orderly arrangement of particles in a solid.

Iron, diamond or even ice are considered Crystalline solids because their molecules are in an orderly arrangement p.33

Who put the solids in my liquid? A substance which has no definite shape but has a definite volulme. The molecules are fast moving molecules which flow. Liquids have an interface (boundary), and can’t be easily compressed. Liquid p. 34

Surface Tension p. 34 The force that acts on the surface of a liquid and that tends to minimize the area of the liquid. Surface Tension p. 34

Surface Tension p. 34 The attraction of molecules to each Try this definition!! The attraction of molecules to each other on a liquid's surface. Thus, a barrier is created between the air and the liquid.

Viscosity The resistance of a gas or liquid to flow. P 34

Gas p. 35 A substance which has no definite shape or volume, no boundaries, can be easily compressed, with extremely fast moving molecules.

Before we go, Check out this clip on states of matter