
Chemistry of Life 2 (Water and Life)
Authored by Brett Davis
Biology
9th - 12th Grade
Used 12+ times

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26 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Water is a(n) _ substance because it does not contain carbon. Each water molecule contains _ atoms of hydrogen
organic, 1
organic, 2
inorganic, 1
inorganic, 2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
_ bonding is found in water. These bonds involve an _ sharing of electrons due to a large electronegativity difference between hydrogen and oxygen
Covalent, uneven
Covalent, even
Ionic, uneven
Ionic, even
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The partial charge of an oxygen atom in a water molecule is _ because it has a higher electronegativity than hydrogen. Water molecules as a whole are _ meaning there are is negatively and positively charged end (dipoles)
negative, polar
negative, nonpolar
positive, polar
positive, nonpolar
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The polarity of water allows for _ bonding to exist between molecules. In this IMF the oxygen atom of a water molecule has a weak attraction to _ atom(s) of nearby molecules
hydrogen, hydrogen
hydrogen, oxygen
covalent, hydrogen
covalent, oxygen
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the polarity of water/hydrogen bonding vitally important to living things?
It allows for thermoregulation
It allows for cohesion and adhesion
It allows ice to float
It makes water an excellent solvent
All answers are correct
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
_ allows water molecules to stick to surfaces. This is only possible if the surface is _
Adhesion, polar/charged
Adhesion, nonpolar/uncharged
Cohesion, polar/charged
Cohesion, nonpolar/uncharged
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cohesion and adhesion are vitally important for _ life that must must transport water for use in photosynthesis. Water is obtained through _ and moved upwards through water conducting cells
plant, roots
plant, leaves
animal, roots
animal, leaves
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