Monday, October 3, 2011

Chemistry 10/3/2011

We began class by using the poll on the internet. Make sure that you know that conductivity is a physical property. Make sure to know that boiling point is a physical chage, due to the fact that it is still the same substance. Make sure to know the molecular makeup of a solid, liquid, and gas.

The molecules in a solid are densely packed together and vibrate sold. There are two types of solids amorphous and crystalline. Amorphous absorbs energy and crystalline solids do not absorb as much energy. Crystalline solid molecules are very oranized which makes the substance more solid. Amorphous solid molecules are very unorganized which makes a solid less solid. Solid molecules are so closely arranged that is cannot be compressed. Solids have a definent shape and volume.

The molecules in a liquid are a little further from eachother and they move in a slide and glide motion. Which means they can slide past eachother, they will not collide. They also can take the shape of its container. A liquid has a indefinant shape but a definant volume. When force is put on a liquid the molecules will all move together.

The molecules of a gas are very spread out and the molecules have alot of energy with alot of collisions happening. Gases can be compressed, however they have an indefinant shape and volume. Compressing a gas created things to implode and explode.

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