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Properties Of Water Part 2
Test Description: The second set of test questions
Instructions: Answer all questions to get your test result.
1) Which of the following is true about polarity?
A
Alcohol is less polar than water which is why it wont boil as fast as water
B
Alcohol evaporates slower than water because it is harder to pull apart alcohol molecules
C
Water is more polar than alcohol so it takes more energy to boil or evaporate.
D
Water evaporates faster than alcohol but would boil slower.
2) Oceans take a long time to heat up because water is so reflective that the heat rays bounce off.
A
True
B
False
3) A water bug being able to walk on the surface of the water is an example of
A
polarity
B
cohesion
C
gravity
D
surface tension
4) In our lab about surface tension, why was the paper clip able to float on water?
A
because the paper clip has a lower density than water so it floats
B
because it is lighter than water so it floats
C
because the attraction between water molecules is so strong that they stick together and hold the paper clip up
5) In the lab where we put water droplets on a penny, what is the word that describes the water droplets attraction to each other and desire to keep its droplet form?
A
mass
B
surface tension
C
cohesion
D
density
6) A pond will require more energy to boil than the ocean
A
false
B
true
7) A lake will freeze faster than a water droplet.
A
false
B
true
8) A water droplet requires less energy to boil than a river.
A
false
B
true
9) Because of water's high specific heat, it takes a long time for water to warm up or cool down as the season changes. Why is this a good thing in an ocean habitat?
A
it wont immediately freeze the plants so the fish don't starve
B
it allows the animals to get used to the temperature changes slowly
C
it allows us to swim in the lake in September
D
it keeps the lakes from boiling in the summer
10) What happened as you kept adding water droplets on top of the penny?
A
the droplets stayed together until you dropped the 3rd drop- then they all ran off the penny
B
the water drops fell off the penny even after one droplet.
C
the droplets clung together and formed a dome or bubble on the surface of the penny
*select an answer for all questions
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