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- 1. Multiple Choice
What is the correct chemical formula for water?
H2O
HO2
H2O2
2H1O
- 2. Multiple Choice
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
- 3. Multiple Choice
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
- 4. Multiple Choice
Water sticks well to many materials. What term relates to this property of water?
cohesion
adhesion
density
surface tension
- 5. Multiple Choice
What is the term for water's ability to defy gravity and climb up a tube?
Capillary Action
Specific Heat
Universal Solvent
Magic
- 6. Multiple Choice
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
- 7. Multiple Choice
At what temperature does water Freeze?
0o C
100o C
32o C
-273o C
- 8. Multiple Choice
At what temperature does water Boil?
0o C
100o C
32o C
212o C
- 9. Multiple ChoiceWhat two elements make up water?Helium and oxygenHydrogen and oxygenhelium and carbonoxygen and carbon
- 10. Multiple ChoiceThe attraction that causes water and other liquids to form drops on thin films is called ________________. This is also water’s ability to be attraction to other water molecules.adhesioncapillary actioncohesionsurface tension
- 11. Multiple Choicemolecule in which opposite ends have opposite electric chargescohesionpolar moleculehydrogen bondsolution
- 12. Multiple ChoiceWater is a universal solvent because it...It can be found anywhereIt freezes when it gets coldfloats when frozenDissolves most substances
- 13. Multiple ChoiceWhich characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?adhesionsurface tensionsolvent propertiesnonpolar
- 14. Multiple Choice
Which of the following is the correct molecular structure for water, H2O?
- 15. Multiple ChoiceLarge bodies of water do not quickly fluctuate in temperature. Why?Water is a solvent.Water has a high heat capacity.Water acts as a buffer.Water is non-polar.
- 16. Multiple Choice
Water striders can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why?
The insects are light enough so they do not break the hydrogen bonds holding the water molecules together
The insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.
The insect’s feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water’s surface.
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
- 17. Multiple ChoiceAttractions between water molecules are calledCovalent bondsIonic bondsPolar bondsHydrogen bonds
- 18. Multiple ChoiceWhich is NOT a unique property of water?Frozen water floats on liquid water.Water covers most of the Earth’s surface and retains a large amount of heat.Water molecules stick to each other through hydrogen bonds.Water cools very rapidly.
- 19. Multiple ChoiceWhat property of water helps to moderate earth's temperature?adhesionchohesionSpecific heat capacityLatent heat of vaporization
- 20. Multiple Choice
How many hydrogen atoms are in a water molecule?
5
1
2
0
- Answer choicesTagsAnswer choicesTags