Question

Why is it possible for a gas to take the shape of its container?

A.
Molecules of a gas are stationary.

B.
Molecules in a gas are shapeless.

C.
Molecules in a gas are much farther apart than in a liquid or solid and move around more freely.

D.
Molecules of a gas easily interact with one another.

Answer 1

@JoannaBlackwelder

Answer 2

Which physical properties can be used to identify an unknown substance?

Choose all answers that are correct.

A.
boiling point

B.
volume

C.
length

D.
density

Answer 3

What do you think?

Answer 4

ngightttttttttttttttt

Answer 5

For the first question, you can cross out A, and most likely C. I'd have to say it's option B, molecules in a gas are shapeless.

As for your second question, weight can change, but boiling point and density can be unique to a substance, helping you determine the identity of it. So your answer is A, boiling point, and D, density.