Question

Helium melts at –272°C. Which of the following statements is true?

A. Helium atoms stop moving when they change from gas to liquid.

B. Helium solidifies close to absolute zero.

C. Helium solidifies below absolute zero.

D. You could use helium to cool an object to absolute zero.

***My answer: B. helium solidifies close to absolute zero

Answer 1

cuz it cannot solidify BELOW absolute zero right?? is my answer right?? is it B??

Answer 2

C is false because you can't go below absolute zero (it's the lowest you can go)

Answer 3

mhmm I'm following so far :)

Answer 4

A is also false because if the atoms stopped moving (and I mean truly stopped moving), then you'd be absolute zero

Answer 5

but the atoms wouldn't form a gas or a liquid (because both have moving atoms)

Answer 6

mhmm :)

Answer 7

kk and what about D?

Answer 8

idk about D but....if you convert -272 C to kelvin, you'll get 1.15 K, which is very close to 0 K, or absolute zero

Answer 9

since the melting point is -272 C, this means it becomes a solid at temps below -272 C or 1.15 K

Answer 10

so B looks like it's it

Answer 11

so yes?? the answer is B?? based on everything u said above? :D

Answer 12

yes i'd go with B, not entirely sure about D though

Answer 13

oh okay :) i'll go with B :) thank you for all the explanations!! :)

Answer 14

i'd say it's false, but not sure

Answer 15

oh okay :) cool!! sounds good i'll go with B!! :D

Answer 16

ok

Answer 17

:) thx

Answer 18

np