IB DP Biology - A1.1 Water Review

Quiz
•
Biology
•
11th Grade
•
Hard
+1
Standards-aligned
Corey Jefferson
FREE Resource
29 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of bond holds the hydrogen and oxygen atoms together within a single water molecule?
Ionic bond
Covalent bond
Hydrogen bond
Peptide bond
Answer explanation
Water molecules are held together by polar covalent bonds, where oxygen is more electronegative than hydrogen, creating a partial charge separation.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The ability of water molecules to form hydrogen bonds is due to:
The symmetrical shape of the molecule
The high molecular weight of water
The partial positive and negative charges on hydrogen and oxygen
The presence of free electrons on oxygen
Answer explanation
Water is polar, with oxygen having a partial negative charge (δ-) and hydrogen a partial positive charge (δ+), allowing hydrogen bonding.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of bond forms between separate water molecules?
Covalent bond
Ionic bond
Hydrogen bond
Van der Waals interactions
Answer explanation
Hydrogen bonds occur between the oxygen of one molecule and the hydrogen of another, creating water’s unique properties.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cohesion in water is primarily due to:
Covalent bonds between molecules
Hydrogen bonding between molecules
Adhesion to other surfaces
The presence of dissolved ions
Answer explanation
Water molecules stick together due to hydrogen bonding, leading to phenomena like surface tension and capillary action.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best explains why water has a high surface tension?
Water has low molecular weight
Hydrogen bonding pulls molecules tightly at the surface
Water has a high heat capacity
Water molecules have weak intermolecular forces
Answer explanation
Water molecules at the surface experience stronger cohesive forces, creating resistance to external force (high surface tension).
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Water is an excellent solvent because:
It can dissolve all substances
It forms hydrogen bonds with nonpolar molecules
Its polarity allows it to dissolve ionic and polar substances
It has low molecular mass
Answer explanation
Water dissolves polar and ionic substances due to the attraction between charges but does not dissolve nonpolar molecules like lipids.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does water have a high specific heat capacity?
Water is a small molecule
Hydrogen bonds absorb heat before breaking
Water has a high molecular mass
Water is nonpolar
Answer explanation
A lot of energy is needed to break hydrogen bonds, allowing water to resist temperature changes and maintain stable conditions.
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