Megan+M&M

DEFINITION Solids: Solids are usually hard and cant be compressed because their molecules have been squashed together which make the solid hard. Some examples of solids are ice-cubes, rocks and diamonds. Solid particals are close together and hardly move because their bonds are too close together Liquids: Liquids can be poured and cant be compressed. Their molecules are spread out which makes it a liquid. Some examples of liquids is water, blood and any drink. The liquid particals move around alot more then solids but still stay together because they still have bonds connected beetween them. Gas: Gases are all around you. They can be compressed but not poured. The molecules in gas are extremely spread out. Gases can fill anything, any size or shape. Gases take a huge amount of space. Some examples of gases are carbon dixode, fire extinglisher and gas bottles. Gas have particals that move freely and very quickly, this is because gas particals have no bonds. []
 * //__MATTERS AND MIXTURES__//**

QUESTIONS: It is when a solid turns directly into a gas without turning into a liquid. It turns into fog then it melts back into a liquid and does that process until the pressure of the air above decreases. The tea would be fairly horrible because up a mountain it would not heat because mountains are very cold so the tea water would not boil and the tea would not be warm. It expands because the air in the freezer makes it rise and the air bubbles get caught in the water when it freezes so thats how it expands.
 * What is sublimation?
 * Supposing you increase the pressure of the air above the boiling liquid. What would happen to the boiling point of the water?
 * Imagine that you are trying to boil water for a cup of tea up a mountain. Why would the cup of tea be fairly horrible?
 * Does water contract or expand on changing from a liquid to a solid?

2 KEYWORD DEFINATION:

Solvent:


 * 1) A substance that dissolves something else to get a solution eg. Water is a solvent for sugar.
 * 2) Something that solves or explains
 * 3) having the power of dissolving; causing solution

Solute:
 * 1) The substance dissolved in a given solution.

QUESTIONS : 1. Why do icebergs float in antarctic and arctic waters? Do you think there is much of the iceberg under water or is it mostly above the water? How could you test your hypothesis? Icebergs float in antarctic and arctic water because the ice was made so it would float in the areas. Most of the iceberg is above the water though with some icebergs there is quite alot of ice underwater. You could get a really cold piece of ice and put it in extremely cold water and take observations. 2. When you have a jar with a very tight lid, you can run it under hot water and it becomes easier to open. Why? Hotwater breaks away the coldness and under the lid, water loses the top area of the jar.

COLLOIDS- GEL: A gel colloid is the proper name for liquid in solid. The gel particles: There are liquid particles that are held between solid particles.

Examples of a gel colloid is: Jelly =

opal =

Silica Gel =