Water Flashcards
What are the steps of hydrogen bonding?
- Each outside hydrogen atom is bonded to the middle oxygen atom by a covalent bond
- Unequal sharing of electrons makes the molecule polar
- Because opposites attract the positive hydrogens are bonded to a negative oxygen of another
Are hydrogen bonds strong or weak
weak
What does hydrogen bonding Gove water
a strong affirming for its self
ex. water droplets
are oxygen atoms positive or negative?
oxygen is slightly negative
are hydrogen atoms positive or negative?
slightly positive
How many hydrogen bonds can each water molecule make?
4
What is water the universal solvent for?
Polar molecules
What kind of bond is there between hydrogen and oxygen?
Polar covalent bond
Since compounds with low molecular weights are usually gases, why is water a liquid?
Hydrogen bonding
What does water being cohesive allow for it to do?
Fill vessels
What does hydrogen bonding allow for dissolved and suspended molecules to be?
evenly distributed
How much does one calorie of heat raise one gram of water’s temperature?
1 degree Celsius (twice the normal for other covalently bonded liquids)
How many calories are required to convert 1g of the hottest water to steam?
540 calories of heat energy
What property of water allows for sweating to happen as well as moderates the earth’s temperature?
high heat of vaporization
What is less dense frozen water or liquid water?
Frozen water
its why ice floats on water
