Rhiannon



Matter and mixtures are everywhere! Here are some diagrams to help show my understandings of matter and mixtures.



- These gas particles can be compressed. - These particles have lots of energy || -The bonds within liquids are much weaker than in a solid. - As the bonds between the particles are weak, the particles move around slowly, they do this by rolling over each other. || -The bonds in a solid are very strong, which is what makes the solid strong and hard to compress. - Because the particles in a solid are very strong, it is much harder for the particles to move around. || Some good internet websites to go to for more information are: http://www.chem4kids.com/files/matter_mixture.html and http://www.chem4kids.com/files/matter_mixtureex.html  Q2) Supposing you increase the pressure of the air above the boiling liquid. What would happen to the boiling point of the water Question 3)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 ?  =** //__COLLOIDS__// **= AEROSOLS  Aerosol is a substance that consists of very fine particles of a liquid or solid, that is suspended in a gas. Aerosol is a liquid substance that is packaged under pressure, such as Deodorant. Some examples of Aerosols are deodorant, whipped cream**, **fly spray etc.** ||  ||
 * -Gas particles have no bonds, which is why they are free to move around (diffusion)
 * What is sublimation? ||  ||
 * Answer: Sublimation is the change from a solid straight to a gas. An example of this is dry-ice, as it does not melt, it goes straight into a gas. ||  ||
 * Answer: I think that the water level would decrease ||  ||
 * Answer: I think that the cup of tea would be fairly horrible because the air pressure at the top of the mountain is different, as well as the temperature, so the tea would taste bad as the boiled water within it would not be properly boiled. ||
 * Question 4) Does water contract or expand on changing from a liquid to a solid? ||
 * Answer: I believe that water expands when changing into the form of a solid. eg. Water and ice. But I believe that when it changes back into a liquid, it contracts. ||
 * 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? ||  ||
 * The ice berg floats because it is lighter than the water. I am pretty sure that 70% of the ice-berg is actually under the water, with the remainder above water. Get a beaker of salty water and add an ice cube to see if it floats. ||  ||
 * 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? ||  ||
 * <span style="color: rgb(23, 238, 23);"> The reason is because heat increases the amount of energy, which increases the movement of the particles, putting more pressure on the sides of the jar, and making the lid actually want to come off because of all the pressure.
 * <span style="color: rgb(21, 198, 198);">A colloid is a type of chemical mixture, where one substance is scattered/seperated evenly through another