Day 2: Gases
Question 1
What moves between the syringes?
Gases exist, take up space.
Question 2
Why is it hard to squeeze a stopped up syringe?
Lecture on the properties of gases. (They are far apart and, at room temperature, they are very fast.)
Question 3
When someone walks into a room, you can see them right away, you can hear them right away, but you do not smell them right away. In fact, sometimes we can't really where a smell is coming from. How does smell travel?
Continuing lecture on the properties of gases. (They are far apart, very fast, and they bump into each other - so they travel in straight segments ... but millions of segments long.)
Question 4
What affects the speed and pressure of gases? What might a "law" be like here? What do the particles know?
A law. (The hotter a gas, the faster its pieces are moving. No more no less.)
Afternoon task: unpacking the mathematical statement of physical laws - what we mean when we write PV = NkT. Playing with the PhET if possible.