Kinetic Theory Questions
1.
Name ______________________
Date _______________________
Why can’t scientists see atoms? ____________________________________________________
______________________________________________________________________________
2.
Democritus thought that there was only one kind of atom, how many kinds of atoms are
actually found in nature? _____________________
3.
An atom is to a drop of water as a drop of water is to ______________________________________
4.
What are the three main pieces of evidence in support of the Kinetic Theory of Matter?
____________________________________________________________________________
______________________________________________________________________________
5.
What causes dust particles to move around when viewed in a microscope (Brownian motion)?
______________________________________________________________________________
______________________________________________________________________________
6.
Why do substances become less concentrated rather than more concentrated as a result of diffusion?
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
7.
Why does diffusion occur faster in hot water than in cold water?______________________________
______________________________________________________________________________
8.
All substances expand when heated and contract when cooled.
What is the name of this process? __________________________________________________
What causes it to happen? _________________________________________________________
9.
Why does hot air rise? ______________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
10. Most thermometers work on the principle of ____________________________________________
11. What is temperature a measure of? (don’t say “how hot something is”) ________________________
______________________________________________________________________________
______________________________________________________________________________
12. What did Gabriel Fahrenheit want 100o to be? ___________________________________________
13. What did Anders Celsius want 100o to be? _______________________________________________
14. What did Lord Kelvin want 0o to be? _________________________________________________
15. Why is the Kelvin scale better for scientific purposes than the other two scales? ______________
______________________________________________________________________________
______________________________________________________________________________
16. If the Kelvin scale is so darned good, why do you think it is that nobody has a Kelvin scale
thermometer in their yard? ___________________________________________________________
______________________________________________________________________________
17. What is human body temperature in degrees Celsius? ____________ in Kelvins? _______________
18. If the temperature outside is 12o C, which would most people choose to wear? _________
a) long pants and a sweat shirt
b) a fire suit
c) shorts and a tee shirt
d) a heavy down jacket
19. If the temperature outside is 312 K, which would most people choose to wear? _________
a) long pants and a sweat shirt
b) a fire suit
c) shorts and a tee shirt
d) a heavy down jacket
20. If the temperature outside is 312o C, which would most people choose to wear? _________
a) long pants and a sweat shirt
b) a fire suit
c) shorts and a tee shirt
d) a heavy down jacket