What kind of molecule is water?
Ionic
Polar Covalent
Nonpolar Covalent
Metallic
Which of the following can water NOT dissolve?
Salt
Sugar
Oil
Baking Soda
Which part of a water molecule has a Positive Charge?
The Hydrogen
The Oxygen
The Top
The Bottom
Which of the following can water NOT dissolve?
Ionic Compounds
Polar Compounds
Nonpolar Compounds
What is the correct chemical formula for water?
H2O
HO2
H2O2
2H1O
Which of the following is an example of COHESION?
water sticking to water
water sticking to glass
oil sticking to plastic
hydrogen sticking to oxygen
Which part of a water molecule has a Negative Charge?
The Hydrogen
The Oxygen
The Left
The Right
Water is polar. What does that mean?
it is a molecule with opposite charges on opposite ends
it is a molecule with no charge
it is a molecule with identical charges on opposite ends
it is a molecule with too many protons
Water sticks well to many materials. What term relates to this property of water?
cohesion
adhesion
density
surface tension
What is the term for water's ability to defy gravity and climb up a tube?
Capillary Action
Specific Heat
Universal Solvent
Magic
At what temperature does water Freeze?
0o C
100o C
32o C
-273o C
A water strider can skate along the top of a pond because:
covalent bonds result in water cohesion (surface tension)
hydrogen bonds result in water cohesion (surface tension)
water striders have adapted to take advantage of water cohesion
water striders are afraid of water and avoid it
At what temperature does water Boil?
0o C
100o C
32o C
212o C
Why does ice float?
water expands when it freezes, making ice less dense than water
water compacts when it freezes, making ice more dense than water
hydrogen bonds in water push the ice to the surface
ice is afraid of water, and avoids it
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