Oliver+M&M

Matter & Mixture


 * Solids ||  || Liquids ||   || Gas ||


 * [[image:http://www.dorlingkindersley-uk.co.uk/static/clipart/uk/dk/sci_matter/image_sci_matter001.jpg width="191" height="149"]] || [[image:http://www.dorlingkindersley-uk.co.uk/static/clipart/uk/dk/sci_matter/image_sci_matter003.jpg width="188" height="167"]] || [[image:http://www.pullouttheplug.co.uk/ks3_chemistry/images/content/gas.png]] ||

Gas: Gas is a substance that you cant hold or touch. Gas forms when liquid is heated or it goes from solid straight to gas like dry ice. Some gas feels warm beacuse it is heated but the gas coming from dry ice is very cold.

Liquid: Liquids can't hold its shape unless it is put into a container and it will take the shape of the container. Like gas you can't hold for very long it would just seep through your hands. When liquid is frozen it turns into solid when heated it turns into gas.

Solids: Solids can hold its shape easily unless forced or broken for its original shape. You can hold a solid for as long as you want, when a solid is frozen it will just stay the same but if heated it will turn into liquid and if continuously heated it will turn into gas.

What is Sublimation It is when a solid changes to a gas while it never becomes a liquid
 * __Questions__**

Supposing you increased the pressure of the air above the boiling liquid. What would happen to the boiling point of the water. Gas will start to flow out of the bubbles and up into the open air.

Imagine that you are trying to boil water from a cup of tea up a mountain. Why would the tea be fairly horrible. Well the tea will become cold fairly quickly after boiling because it is at a high altitude if very high it might freeze.

Does water expand or contract from changing a liquid to a solid. Water expands when it is turning into a solid.

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? It is like a ice cube if you put in water it will float. You could get 1L of water and i kilogram of ice which wil weigh more.

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? Then lid will expand from the heat therefore growing larger but it might also crack the glass