First, we reviewed what we did in school Friday. On Friday, we dissolved sugar into water to see if mass is conserved. We found that mass is conserved. We made the following lists.
Things that are conserved:
Things that aren't conserved:
-volume--->empty space issue
Terms to know:
volume- the amount of space something takes up.
mass- the amount of stuff (matter) something is made of.
To find someone's weight without a scale, you could lift them up. This doesn't work in space because he doesn't have any amount to push or pull something. This is your weight.
Difference between mass and weight:
Mass won't necessarily go away, but weight could.
Mr. Finley takes a piece of paper and crumples it up. Has the mass changed?
No, the volume changed. The mass didn't change because he didn't take anything away.
When he lights the paper on fire, the mass does change because the fire is consuming the paper. There ended up being less of the paper left. The mass is going to decrease because the paper is turning into gas. The evidence is the smoke rising from the fire that is burning the paper.
Here is a link to a very important question that deals with what we learned about today.