Help Please if U Help Me Thank Youu :)?

Question by kayla u: help please if u help me thank youu :)?
10: Why does H2O expand when water turns to ice?
All materials expand when cooled.
The crystalline structure of ice causes it to expand.
Water cannot be compressed.

11: Which of the following it true about water freezing to become a snowflake?
The rate at which it freezes affects how the crystals are formed.
It only affects how heavy the snow is.
Cold temperatures cause snowflakes to shrivel up.

12: 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”.

13: What is a possible reason that iron is a solid while H2O is a liquid at room temperature?
Iron atoms are heavier than water molecules and thus require more energy to go to the liquid state
Iron atoms are harder than water molecules
Adding water to iron changes it to the rust state of matter

Best answer:

Answer by Lady Geologist
Give them all a try. Then go back to your notes and book, maybe the internet to check your answers. Then if you are still stuck, come back and explain why you chose your answers ans we will help you then.

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