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WorksheetsA1.1 - Water
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
What is the main reason for the polarity of water molecules?
a)
Sharing of electrons in water molecules is unequal.
b)
Water molecules have an equal distribution of charge.
c)
Hydrogen bonds form between water molecules.
d)
Water molecules are nonpolar and do not have a charge.
2.
What is the medium in which most processes of life occur?
a)
Water
b)
Fire
c)
Air
d)
Soil
3.
What are the solvent properties of water linked to?
a)
Its role as a medium for metabolism and transport
b)
Its low specific heat capacity
c)
Its low thermal conductivity
d)
Its high viscosity
4.
How does the viscosity of water compare to that of air?
a)
Viscosity does not apply to water or air
b)
Water is less viscous than air
c)
Water is more viscous than air
d)
Water and air have the same viscosity
5.
What is the main consequence of water's adhesion to materials that are polar or charged?
a)
Water loses its ability to transport nutrients in plants and animals.
b)
Water is unable to interact with polar or charged materials.
c)
Water forms hydrogen bonds with the materials, causing them to dissolve.
d)
Water exhibits capillary action in soil and plant cell walls.
6.
What is the relationship between the search for extraterrestrial life and the presence of water?
a)
The presence of water may be necessary for extraterrestrial life to exist.
b)
The presence of water is irrelevant to the search for extraterrestrial life.
c)
The presence of water guarantees the existence of extraterrestrial life.
d)
The presence of water makes the search for extraterrestrial life more difficult.
7.
How are the solvent properties of water linked to its role as a medium for metabolism?
a)
Water has no role in the transport of molecules in plants and animals.
b)
Water prevents the dissolution of hydrophilic molecules, inhibiting metabolic reactions.
c)
Water dissolves hydrophilic molecules, allowing them to participate in metabolic reactions.
d)
Water only dissolves hydrophobic molecules, which are necessary for metabolism.
8.
What causes the polarity of covalent bonding within water molecules?
a)
Ionic bonding
b)
Equal sharing of electrons
c)
Unequal sharing of electrons
d)
Hydrogen bonding
9.
Which physical property of water allows some animals to float in aquatic habitats?
a)
Thermal conductivity
b)
Viscosity
c)
Specific heat capacity
d)
Buoyancy
10.
Cohesion of water molecules due to hydrogen bonding results in:
a)
Water being a poor solvent for hydrophilic molecules.
b)
Water molecules sticking together, forming droplets.
c)
Water molecules being repelled by each other.
d)
Water molecules breaking apart easily.
11.
How do the physical properties of water compare to those of air?
a)
Water is less dense than air.
b)
Water is more viscous than air.
c)
Water has a higher thermal conductivity than air.
d)
Water has a lower specific heat capacity than air.
12.
What is the adhesion of water to materials that are polar or charged due to?
a)
Hydrogen bonding
b)
Covalent bonding
c)
Ionic bonding
d)
Van der Waals forces
13.
What is the main reason for the extraplanetary origin of water on Earth?
a)
Water was always present on Earth since its formation
b)
Water was formed through chemical reactions on Earth
c)
Water was brought to Earth by comets and asteroids
d)
Water originated from volcanic activity on Earth
14.
Which of the following statements best describes the significance of water for life?
a)
Water is the medium in which most processes of life occur.
b)
Water is essential for plants but not for animals.
c)
Water has no effect on the functioning of living organisms.
d)
Water is only important for aquatic organisms, not terrestrial organisms.
15.
What is the cohesion of water molecules due to?
a)
Hydrogen bonding
b)
Ionic bonding
c)
Covalent bonding
d)
Van der Waals forces
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