The molecules are rangement of ice water and steam are very different blank has the most ordered arrangement my castle next most orderly arrangement and blank has a lease order in the arrangement of molecules

Yes

I’m not sure about this question

Repeated trials allow you to calculate a mean which can reduce the effect of random errors to make your results more precise.your results will also be reproducible therefore if someone else did the same experiment they'd get the same results which would make your results more reliable.

The correct answer for the first question is a. because if cold air is denser then the warm air will be pushed out of the way. the coreect answer for the 2nd question is a.