Which properties of a gas increase linearly as the temperature is increased?
A. Volume and density
B. Volume and pressure
C. Amount of gas and density
D. Amount of gas and volume
I believe the answer is A or D But I am pretty sure the answer is a
No. Look at the P vs V plot at that same site. It certainly is not linear. Do you know what linear means?
See the V vs T graph.
https://www.google.com/search?q=graph+volume+gas+vs+T&ie=utf-8&oe=utf-8
is the answer B?
after looking at graphs I know believe the answer is D. What do you think?
What does linear mean?
it goes in the same directions. If temperature increase then the other properties have to increase
I think you have defined "directly proportional" which is the opposite of "inversely proportional". Here is the definition of linear from the web.
https://www.google.com/search?q=define%3Alinear&ie=utf-8&oe=utf-8
Notice it talks of a straight line. You had the right answer when you started. I simply posted that V vs T plot to show you it was a straight line. The P vs V plot is a curved line. Go back and look at those graphs. The V vs T is straight, V vs P is curved, and the other choices make no sense anyway.