Question

Suppose an empty plastic bottle is sealed tightly at room temperature and then placed in the freezer. After some time the bottle changes shape. The bottle becomes slightly crushed as the volume of the air in it decreases. Why does the volume of the air decrease?























































The amount of empty space in between the particles of air decreases.





The size of the air particles decreases.





The number of air particles in the bottle decreases.





all of these

Answer 1

@Gravity_Dreams
@epoweritheta

Answer 2

@_EEVEE_

Answer 3

i think c but im not sure

Answer 4

it waas d

Answer 5

The air inside of a hot air balloon is made of the same types of particles as the air outside the balloon, but the balloon rises because hot air is less dense than cool air.

The reason that the hot air has a lower density is that hotter particles
















































































spread out more.





move more slowly.





stay closer together.





take up less space.

Answer 6

c

Answer 7

a

Answer 8

Warm air rises and cold air sinks. This fact implies that









































































































increasing the temperature decreases the mass of molecules of air.





decreasing the temperature increases the effects of gravity on air.





increasing the temperature increases the distance between molecules of air.





decreasing the temperature decreases the number of molecules in the air.

Answer 9

d maybe ?