2170843
Frage 1
Frage
Which end of a H2O molecule has a slight negative charge?
Antworten
-
Oxygen end
-
Hydrogen end
Frage 2
Frage
What kind of bond is formed when two water molecules are within close contact of one another?
Antworten
-
Ester
-
Phosphodiester
-
Hydrogen
-
Glycosidic
Frage 3
Frage
Cohesion is the sticking together of water molecules. It is not strong as the hydrogen bonds are very weak.
Antworten
- True
- False
Frage 4
Frage
Water attracts polar molecules.
Antworten
- True
- False
Frage 5
Frage
Water has....
Antworten
-
A low specific heat capacity
-
A high latent heat of vaporisation
-
A high surface tension
-
A maximum density at 6 degrees
-
Hydrogen bonds
Frage 6
Frage
Hydrogen bonds are formed when two water molecules are close together and their opposite charges attract each other. This weak attraction forms the hydrogen bond between the neighbouring molecules.
Antworten
- True
- False
Frage 7
Frage
At what temperature does water reach its maximum density?
Antworten
-
1 degrees
-
3 degrees
-
4 degrees
-
5 degrees
-
6 degrees
-
8 degrees
Frage 8
Frage
Which of the following are examples of where water is important in transport.
Antworten
-
In the phloem
-
In the transpiration stream
-
During active transport
-
In blood
-
During digestion
Frage 9
Frage
Surface tension allowed the surface film of the standing water to support aquatic insects.
Antworten
- True
- False
Frage 10
Frage
A small amount of heat energy is required for a rise in the temperature of water.
Antworten
- True
- False
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