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I learned that that a solid can skip liquid form and go straight to a gas.

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I learned that matter takes up everything around us. For example, matter is in a balloon as the state of gas. I also learned that dry ice when it is put into a warm room it dissolves into gas.

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I learned that if you put a ping pong ball in liquid nitrogen and then take it out and put it in a circular metal tin it will spin around extremely fast.

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I learned that the water cycle includes liquids and gases!

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I learned that liquid nitrogen can make any lesson more engaging!

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I learned that  dry-ice can shed gas before melting to liquid water.I also learned that if you put a flower in freezing liquid water that it will dry out quickly.

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One thing I learned is that matter can change from solid straight to gas.  I also learned that  gas can go back and skip liquid and go straight to solid.

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I learned that if you put dry ice with very hot water and pour it on the ground it will clear the dirt away.

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I learned that liquid nitrogen is way below freezing temperature.  It is a clear liquid but can change to a gas.  I learned that if you put a flower in liquid nitrogen the flower will dry out instantly.   A solid mass can be changed to liquid, for example ice melting.  I also learned we breath oxygen in and carbon dioxide out.

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I learned that if you put dry ice in a balloon it will get bigger and bigger. Then it will pop.

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One thing I learned from the Physical Changes of Matter program was that when liquids evaporate they turn into gases.

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I learned that if you put dry ice in a balloon the balloon will fill up with air. After a while the balloon will pop.

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I learned that liquid  nitrogen can make metal smaller and it can make a banana rock hard!

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I learned that ice can evaporate without melting first. This is called sublimation.