Changing States of Matter
Did you know that water is the only substance on Earth that exists as a solid (ice), liquid and gas (water vapour) at normal temperature?
Kinetic Theory of Matter |
Sometimes known as the Particle Theory of Matter.
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The Kinetic Theory of Matter can be remembered in 7 steps:
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Let's try and explain that in simpler English.
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If you understand the 7 steps in the Kinetic Theory of Matter, it can help you explain many of the common things in daily life. For example, why is there condensation on the inside of your windows in winter? Why are there gaps on the road on bridges? Why are some things tight in winter but loose in summer? This knowledge is useful for the creation of new materials too. Watch the YouTube video (use closed captions CC in English to help you understand). |
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Interactive simulations / GAMES
Here are some links to interactive animations/games that will help you understand the states of matter and the changes in states of matter.
Splash ABC (Australia) - Types of Matter: Solids, Liquids, Gases Intel Education Resources - STEM: Changes of State PHET - Interactive simulation: States of Matter The following needs to be downloaded. It is safe. Reading to check your understanding Chem4kids - States of Matter |
Water is a little different
As you know, the water molecule (H2O) is a strange shape. It looks like Mickey Mouse's head. Keep this in mind.
When matter cools, the particles move closer together. But, with the water molecule, the strange shape makes it expand (get bigger) when it cools.
So, when you freeze water to make ice cubes, the ice cubes are bigger than the amount of water you put in. This is also the same reason why you DO NOT put a glass bottle full of water in the freezer.
What will happen?
When matter cools, the particles move closer together. But, with the water molecule, the strange shape makes it expand (get bigger) when it cools.
So, when you freeze water to make ice cubes, the ice cubes are bigger than the amount of water you put in. This is also the same reason why you DO NOT put a glass bottle full of water in the freezer.
What will happen?