Questions: Explain how these properties of water are related to the phenomena described in parts A-H below. More than one property may be used to explain a given phenomenon. 1. During the winter, air temperature in the northern United States can remain below 0°C for months; however, the fish and other animals living in the lakes survive. 2. Many substances – for example, salt (NaCI) and sucrose - dissolve quickly in water. 3. When you pour water into a 25-ml graduated cylinder, a meniscus forms at the top of the water column. 4. Sweating and the evaporation of sweat from the body surface help reduce a human's body temperature. 5. Water drops that fall on your car tend to bead up or round up more after you polish (or wax) that car than before you polished it. 6. If you touch the edge of a paper towel to a drop of colored water, the water will move up into (or be absorbed by) the towel. Answers: Type the correct letter(s) next to the appropriate number. 1. 2. 3.

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Questions: Explain how these properties of water are related to the phenomena
described in parts A-H below. More than one property may be used to explain a given
phenomenon.
1. During the winter, air temperature in the northern United States can remain below
0°C for months; however, the fish and other animals living in the lakes survive.
2. Many substances – for example, salt (NaCl) and sucrose – dissolve quickly in water.
3. When you pour water into a 25-ml graduated cylinder, a meniscus forms at the top
of the water column.
4. Sweating and the evaporation of sweat from the body surface help reduce a human's
body temperature.
5. Water drops that fall on your car tend to bead up or round up more after you polish
(or wax) that car than before you polished it.
6. If you touch the edge of a paper towel to a drop of colored water, the water will
move up into (or be absorbed by) the towel.
Answers: Type the correct letter(s) next to the appropriate number.
1.
2.
3.
4.
5.
6.
Page 1 of 2
293 words
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Transcribed Image Text:AutoSave 1306 Chp 2 Student Questions on Hydrogen Bonds (2).docx - Protected View - Saved to this PC - O Search jaime morales JM File Home Insert Design Layout References Mailings Review View Help A Share P Comments i) PROTECTED VIEW Be careful-files from the Internet can contain viruses. Unless you need to edit, it's safer to stay in Protected View. Enable Editing Questions: Explain how these properties of water are related to the phenomena described in parts A-H below. More than one property may be used to explain a given phenomenon. 1. During the winter, air temperature in the northern United States can remain below 0°C for months; however, the fish and other animals living in the lakes survive. 2. Many substances – for example, salt (NaCl) and sucrose – dissolve quickly in water. 3. When you pour water into a 25-ml graduated cylinder, a meniscus forms at the top of the water column. 4. Sweating and the evaporation of sweat from the body surface help reduce a human's body temperature. 5. Water drops that fall on your car tend to bead up or round up more after you polish (or wax) that car than before you polished it. 6. If you touch the edge of a paper towel to a drop of colored water, the water will move up into (or be absorbed by) the towel. Answers: Type the correct letter(s) next to the appropriate number. 1. 2. 3. 4. 5. 6. Page 1 of 2 293 words O Focus 100%
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NAME
1306 Chapter 2.2 Questions on Hydrogen Bonds
Hydrogen
bonds
O Hydrogen bonds develop readily
between adjacent water molecules,
with the partially positive pole of one
water molecule tugging at, and being
tugged upon by, the partially negative
pole of a neighboring water molecule.
1-Slightly
negative
2 When water freezes,
hydrogen bonds
become more rigid,
and water molecules
become stacked in a
3D network, forming a
crystal lattice.
+ Slightly
positive
Hydrogen bonds are
constantly forming..
3 Water molecules are
spaced farther apart in
an ice crystal, making
ice less dense than
water and able to float
on it.
..and breaking.
6 When water
hydrogen bonds form
between some water
molecules, but not a
them, and the water
molecules can move
about.
liquid,
O When water heats up, energy from the
heat breaks the hydrogen bonds, and
the number of intact hydrogen bonds
decreases as the temperature rises.
As a result, some water molecules
escape as vapor, or steam.
t all of
Figure 3.6
Water molecules change state as hydrogen bonds increase or decrease
Japanese snow macaques escape the cold with a daily dip in natural hot springs. Water can be seen
here in its liquid, solid, and gas states.
Life as we know it could not exist without water. All the chemical reactions of life occur
in aqueous solution. Water molecules are polar and are capable of forming hydrogen
bonds with other polar or charged molecules. As a result, water has the following
properties:
A. H20 molecules are cohesive; they form hydrogen bonds with each other.
B. H20 molecules are adhesive; they form hydrogen bonds with polar surfaces.
C. Water is a liquid at normal physiological (or body) temperatures.
D. Water has a high specific heat.
E. Water has a high heat of vaporization (energy needed to evaporate).
F. Water's greatest density occurs at 4°C.
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Transcribed Image Text:AutoSave 1306 Chp 2 Student Questions on Hydrogen Bonds (2).docx - Protected View - Saved to this PC - P Search jaime morales 困 JM File Home Insert Design Layout References Mailings Review View Help A Share P Comments O PROTECTED VIEW Be careful-files from the Internet can contain viruses. Unless you need to edit, it's safer to stay in Protected View. Enable Editing NAME 1306 Chapter 2.2 Questions on Hydrogen Bonds Hydrogen bonds O Hydrogen bonds develop readily between adjacent water molecules, with the partially positive pole of one water molecule tugging at, and being tugged upon by, the partially negative pole of a neighboring water molecule. 1-Slightly negative 2 When water freezes, hydrogen bonds become more rigid, and water molecules become stacked in a 3D network, forming a crystal lattice. + Slightly positive Hydrogen bonds are constantly forming.. 3 Water molecules are spaced farther apart in an ice crystal, making ice less dense than water and able to float on it. ..and breaking. 6 When water hydrogen bonds form between some water molecules, but not a them, and the water molecules can move about. liquid, O When water heats up, energy from the heat breaks the hydrogen bonds, and the number of intact hydrogen bonds decreases as the temperature rises. As a result, some water molecules escape as vapor, or steam. t all of Figure 3.6 Water molecules change state as hydrogen bonds increase or decrease Japanese snow macaques escape the cold with a daily dip in natural hot springs. Water can be seen here in its liquid, solid, and gas states. Life as we know it could not exist without water. All the chemical reactions of life occur in aqueous solution. Water molecules are polar and are capable of forming hydrogen bonds with other polar or charged molecules. As a result, water has the following properties: A. H20 molecules are cohesive; they form hydrogen bonds with each other. B. H20 molecules are adhesive; they form hydrogen bonds with polar surfaces. C. Water is a liquid at normal physiological (or body) temperatures. D. Water has a high specific heat. E. Water has a high heat of vaporization (energy needed to evaporate). F. Water's greatest density occurs at 4°C. Page 1 of 2 293 words O Focus 100%
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