Gases micro-lesson
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Learning time
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Gas is one of the three states of matter. And the three properties of gas you need to remember are gases have no fixed shape, they have no fixed volume, and they fill all of their available space. So, gases have no definite shape and gas behaves very differently to solids and liquids because we cannot really see or touch gas in the same way that we can with solids and liquids. But there are gases around us all the time. The air we breathe in and the air we the breathe out are both gases. That's oxygen and carbon dioxide. Now, the particles in gas are very, very spaced out so there's lots of room for these particles to move around. And this is why gases move so freely and why they expand to fill all of their available space. Some examples of gases are helium which helps our balloons float and carbon dioxide. So, gases have no fixed weight, no fixed shape, and they fill all of their available space.

Answer time
Kids earn more screen time by answering fun educational questions.
Here are some example of questions about this video that kids may be asked in the 1Question app to earn screen time.
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How are particles arranged in Gases?
1) Very spaced out2) Tightly packed3) Near eachother4) Close together -
How do particles in Gases move?
1) Freely2) slowly3) vibrates4) They don't move -
The airs we breathe in and out are ?
1) Gases2) Solids3) Liquids -
What are the three properties of gas?
1) No fixed shapeNo fixed volumeFill all available space2) fixed shapefixed volumeFill no space3) No fixed shapeNo fixed volumeInvisible4) No fixed shapefixed volumeInvisible -
Which state of matter is most likely to be invisible?
1) Gas2) Solid3) Liquid

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Georgina Mullin
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