answer each question carefully.
1 water molecules are composed of
a two oxygen atoms and two hydrogen atoms.
b one oxygen atom and two hydrogen atoms.
c two oxygen atoms and one hydrogen atom.
d one oxygen atom and one hydrogen atom.
2 what causes the unique properties of water, such as its cohesion and its ability to
stabilize temperature?
a ionic bonds
b nonpolar covalent bonds
c hydrogen bonding
d peptide bonds
3 why is water often called he universal solvent\?
a it can dissolve many other molecules.
b water can turn into a solid form.
c water is a type of solution.
d it solves most of the worlds environmental problems.
4 waters ability to resist changing its temperature when it absorbs or releases heat
is known as its:
a capillary action
b high specific heat
c high boiling point
d high density
5 the fact that ice floats on liquid water is primarily due to which property?
a waters density increases when frozen.
b water is less dense when frozen.
c waters cohesive forces break down when frozen.
d waters ability to resist temperature change.
6 what is the fundamental cause of waters unique properties, such as its cohesion
and specific heat?
a covalent bonds
b ionic bonds
c hydrogen bonding
d nonpolar structure
7 matter that organisms require for their life processes are called
a legumes.
b decomposers.
c fertilizers.
d nutrients.

Question

answer each question carefully.
1 water molecules are composed of
a two oxygen atoms and two hydrogen atoms.
b one oxygen atom and two hydrogen atoms.
c two oxygen atoms and one hydrogen atom.
d one oxygen atom and one hydrogen atom.
2 what causes the unique properties of water, such as its cohesion and its ability to
stabilize temperature?
a ionic bonds
b nonpolar covalent bonds
c hydrogen bonding
d peptide bonds
3 why is water often called 	he universal solvent\?
a it can dissolve many other molecules.
b water can turn into a solid form.
c water is a type of solution.
d it solves most of the worlds environmental problems.
4 waters ability to resist changing its temperature when it absorbs or releases heat
is known as its:
a capillary action
b high specific heat
c high boiling point
d high density
5 the fact that ice floats on liquid water is primarily due to which property?
a waters density increases when frozen.
b water is less dense when frozen.
c waters cohesive forces break down when frozen.
d waters ability to resist temperature change.
6 what is the fundamental cause of waters unique properties, such as its cohesion
and specific heat?
a covalent bonds
b ionic bonds
c hydrogen bonding
d nonpolar structure
7 matter that organisms require for their life processes are called
a legumes.
b decomposers.
c fertilizers.
d nutrients.

Accepted Answer

# 1.
## Brief Explanations:
The chemical formula of water is $H_2O$, which means one oxygen atom ($O$) and two hydrogen atoms ($H$).
# Answer:
B. One oxygen atom and two hydrogen atoms.

# 2.
## Brief Explanations:
Hydrogen bonding is responsible for water's unique properties like cohesion (water molecules sticking to each other) and its ability to stabilize temperature (due to the energy required to break hydrogen bonds). Ionic bonds are between ions, non - polar covalent bonds are in non - polar molecules (water is polar), and peptide bonds are in proteins.
# Answer:
C. Hydrogen bonding

# 3.
## Brief Explanations:
Water is called the “universal solvent” because it can dissolve many different types of molecules (due to its polar nature). Option B is about the state change of water, option C is a wrong description of what a solvent is, and option D is an over - exaggeration.
# Answer:
A. It can dissolve many other molecules.

# 4.
## Brief Explanations:
High specific heat means that water requires a relatively large amount of heat to change its temperature. Capillary action is about water moving in narrow spaces, high boiling point is a different property, and high density is not related to resisting temperature change.
# Answer:
B. High specific heat

# 5.
## Brief Explanations:
When water freezes, the hydrogen bonding causes the water molecules to form a lattice structure that is less dense than liquid water. So ice (solid water) floats on liquid water. If water's density increased when frozen (option A), ice would sink. Cohesive forces (option C) are more about water - water attraction in liquid state, and temperature resistance (option D) is about specific heat.
# Answer:
B. Water is less dense when frozen.

# 6.
## Brief Explanations:
Hydrogen bonding between water molecules gives water its unique properties such as cohesion (molecules sticking together) and specific heat (energy to break hydrogen bonds). Covalent bonds are within the water molecule ($H - O$ bonds), ionic bonds are not in water, and water has a polar structure (not non - polar).
# Answer:
C. Hydrogen bonding

# 7.
## Brief Explanations:
Nutrients are the matter that organisms need for life processes. Legumes are a type of plant, decomposers are organisms that break down dead matter, and fertilizers are substances added to soil to improve plant growth (but not all nutrients for organisms come from fertilizers in a natural sense).
# Answer:
D. nutrients

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