Answer:
polar bonds are caused by different kind of atoms, because almost every atoms have different powers to attract electrons.
the answer will be the two same atoms, F2
They will repel one another because opposites attract, but like charges will repel.
Answer: crystalline solid
Explanation: Most ionic compounds exist in crystalline solid form especially at room temperature.
The density of water is about 1kg/m³, therefore is the substance has a density of less than 1kg/m³ then it will most likely float however if it is more than 1kg/m³ then it will most likely sink.
I believe that you are needing to pick from the three word choices. I believe the first one would be fact and the second one would be conduct experiment.