CAN U PLZ TELL ME if THESE 5 PHYSICAL SCIENCE QUESTIONS ARE CORRECT!!!?

Question by i <3 animals: CAN U PLZ TELL ME IF THESE 5 PHYSICAL SCIENCE QUESTIONS ARE CORRECT!!!?
CAN U PLEASE CHECK THESE AND TELL ME IF THEY ARE RIGHT AND WHICH ONES ARE WRONG!!! i PUT 3 *** THINGYS NEXT TO THE 1 I CHOOSE
1.) Why won’t a gas stay in a cup?
***Its molecules have a lot of energy and will spread out as much as possible.
The gas will stay if you hold the cup upside-down.
You can’t put a gas in a cup.
2.) Which of the following statements best describes the change in temperature of a sample of ice as it is melted to water?
The temperature of the sample rises steadily throughout the entire melting process
*** The temperature of the sample rises until the ice reaches the melting point then remains the same until all of the ice is melted.
The temperature of the sample does not change at all.
3.) What happens to the volume of a sample of H2O when it turns ice?
It remains the same
It contracts and becomes smaller
***It expands and becomes larger
4.) Why does temperature affect the shape of snowflakes?
***The rate at which they freeze affects how the crystals are formed.
It only affects how heavy the snow is.
Cold temperatures cause snowflakes to shrivel up.
5.) Why is frozen carbon dioxide called “dry ice”?
Because of its extremely low temperature.
*** Because it does not turn into a liquid when it melts.
To avoid confusion with “wet ice”.

Best answer:

Answer by anonymous
1 correct-Its molecules have a lot of energy and will spread out as much as possible
2 correct-The temperature of the sample rises until the ice reaches the melting point then remains the same until all of the ice is melted.
3 correct- It expands and becomes larger
4 correct-The rate at which they freeze affects how the crystals are formed
5 correct-Because it does not turn into a liquid when it melts

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