12. Walter is washing windows on a large building. He starts by washing the window on the 4th floor, then down to the 3rd floor, then up to the 6th floor, then down to the 5th floor,
then down to the 2nd floor, and finally he washes the 1st floor window. What is his total
distance?
a. 11 floors
b. 3 floors
C. 9 floors
d. 5 floors
e. 13 floors

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

what is the actual question though?

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.