We talked about solids, liquids, gases and plasmas.
We also looked at ways to determine whether something was a solid, liquid, or gas by looking at the shape and volume of H2O in solid, liquid and gas form.
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| Which one contains a solid? Liquid? Gas? |
We also explored ways to change matter from one state to another. Sometimes we had to add energy to change states (using heat to melt a solid ice cube into liquid water), and somtimes we had to take away energy (cooling down water vapor in our balloon and changing it into liquid water.)
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| A little bit of water in the bottle is heated with hot water and turns to vapor to fill the balloon |
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| The vapor condenses into water and falls out the the balloon when energy is taken away with cold water. |
We also looked at creating a new form of matter using the chemical reaction of baking soda (solid) and vinegar (liquid) to create carbon dioxide gas in the bubbles. Don't forget your goggles!
Lastly we looked at an interesting compound that goes directly from a solid to a gas, skipping the liquid stage (the fancy science word for this is sublimation!)
This compound is Carbon dioxide! The same gas you breath out every day as well as the one you made with baking soda and vinegar!
Carbon dioxide as a solid is known as "dry ice" because it skips the liquid stage and turns into gas. To become a solid from a gas, it has to be really cold with a lot of energy being removed! We decide to go the other way and warmed up the solid in water and were able to trap the gas inside bubbles!
Try sorting items into their correct state using the link to the game below!
or check out this link to a matter song by Peter Weatherall.
We finally figured out "What's the Matter?" It was a solid, liquid, gas or plasma!
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