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Properties of Water Lab Report
Instructions: Investigate the properties of water by choosing one experiment to conduct. Use the following lab template to ensure all lab report components are included. Submit your lab report to your instructor when completed.
Objective(s):
Identify the purpose of your investigation or the question you are attempting to answer. Be sure to tie in the property of water you are testing. Background Knowledge
:
Polarity and hydrogen bonding are two key factors that contribute to the unique properties of water. Since water is made of cohesive molecules, it causes water droplets to stick together, and water is adhesive and cohesive.
Experiment:
Title: Investigating Cohesion Objective: The goal is to try and figure out how much water droplets can fit onto a penny without it overflowing the penny.
Hypothesis: If i drop a small amount of water onto the penny then i believe i can put sixteen water drops on the penny without it spilling and overflowing, Variables:
•
Independent Variable: The trails •
Dependent Variable: The number of water droplets.
•
Controlled Variable: Water and the penny
Materials: Penny, water, paper towel, dropper
Procedure:
The procedure should be clear and detailed, so that others can repeat it. The details should be specific in how the procedure changes the independent variable, controls all variables that need to be controlled, and observes or measures the resulting changes to the dependent variable.
Data and Observations:
Present all data and observations in a neat and organized manner. Include tables and graphs where appropriate/possible.
Trials
Total Drops of Water
1
15
2
16
3
17 Average 17
Conclusion:
Include the following as a summary paragraph in the conclusion of your lab report:
•
Analysis of the results of the experiment •
Rationale for the support or rejection of the hypothesis
•
Description of how the investigation could be tested further
Conclusion
:
My hypothesis was not to correct, more than sixteen drops of water can fit on the penny's surface. The penny had an average of seventeen water drops on its surface. If I were to repeat the same experiment I should be more careful and precise with putting drops on the penny, to have more accurate results.
Questions: Answer these questions in complete sentences using evidence from your investigation.
•
The properties of water are an essential part of what makes water unique. What affect does the properties of water have on Earth’s surface and its systems? When cohesion and adhesive hold water together due to attraction between them. The heat vaporization is part of the properties that affect the earth's surface, and its also the reason water is able to absorb heat temperatures and energy. The properties of water can affect the earth's surface from chemical to physical ways.
•
How does water’s molecular structure affect solubility of substances on Earth? Provide a real-world example.? The water affects solubility because water has the ability to make bonds with positive and negatively charged molecules. Both the charged molecules aid the solubility with other different substances.
•
Explain how all the properties of water are related. Provide an example to describe the interconnectivity of each property. Be sure to include hydrogen bonding, polarity, surface
tension, capillary action, cohesion, adhesion, high specific heat, and expansion upon freezing. The main properties are polarity cohesion and adhesion. Cohesion is H20 molecules that are capable to create surface tension. Adhesion has hydrogen bonding that holds water molecules with other molecules. Specific heat allows evaporative cooling and happens when heat energy is transferred to water molecules.
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Related Questions
Directions: Analyze each of the following statements whether it describes the property
of water. Write TRUE if the statement is correct but if it Is False, change the underlined
word or group of words to make the whole statement true. Write your answers on the
space provided.
4. The oxygen atom of water is covalently bonded with the two hydrogen
atoms in a water molecule.
5. As we raise the temperature of water this would mean we are increasing its
average kinetic energy.
6. The sticking of water molecules on the wall of a beaker would display
adhesion.
7. The bond that holds each water molecule with the adjacent water molecule
is a hydrogen bond.
8. Substances that are polar and ready to be dissolved in water are called
hydrophobic.
9. The type of intermolecular force which is a polar covalent bond makes the
water polar and explains why water is a universal solvent.
10. High surface tension is the property of water that allows the lucky fishes to.
stay on lakes where the water takes a…
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Directions: Analyze each of the following statements whether it describes the property
of water. Write TRUE if the statement is correct but if it Is False, change the underlined
word or group of words to make the whole statement true. Write your answers on the
space provided.
7. The bond that holds each water molecule with the adjacent water molecule
is a hydrogen bond.
8. Substances that are polar and ready to be dissolved in water are called
hydrophobic.
9. The type of intermolecular force which is a polar covalent bond makes the
water polar and explains why water is a universal solvent.
10. High surface tension is the property of water that allows the lucky fishes to.
stay on lakes where the water takes a lot of heat before it gets hot.
arrow_forward
INSTRUCTIONS
— Do not copy in Google or Bartleby. Plagarize Checker will be used
— Highlight the "Key Ideas/concept" of your answer
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Sketch several water molecules, showing all covalent and hydrogen bonds. Be sure to indicate the polarity of each water molecule.
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Describe the physical property of water that you find interesting. Also, describe the chemical property of water that you find the most interesting
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List the main steps involved in treating water for domestic uses?
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What category of environmental chemistry that deals with chemical phenomena in all types ofwater and natural waters?
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True or False:
The nonpolar nature of water is an integral feature to its role as "the solvent of life."
Group of answer choices
True
False
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One chemical that is added to water during water treatment. How is it added to water and why? Include chemical
formulae and chemical reactions.
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Water samples found in the laboratory and in the environment may differ significantly in a number of ways. Consider the composition of deionized water, freshwater, brackish water, and seawater. Predict the relative conductivity of these four types of
water and rank them from lowest to highest.
Lowest conductivity
Choose...
Choose...
Choose...
Choose...
Highest conductivity
< ВАСК
Question 9 of 9
REVIEW
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Under what conditions can an ionic compound conduct electricity?
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Hi, what is an example of water resisting temperature change? and why?
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Solve question 26 and 27
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What applications does water potentially have based on its chemical and physical properties?
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Part C- Polarity Demonstration
The results for the demonstration for polarity of various substances presented in the image below. Note that each vial has two
liquid layers, water and oil. (Oil is a hydrocarbon chain.) Use this image to complete the following question.
oil
oil
oil
oil
oil
water
water
water
water
water
With sodium
chloride
With iodine
(dark purple solid)
With copper
With sulfur
Blank
(yellow solid)
sulfate
(light blue solid)
(no solute)
(colorless, ionic solid)
Classify each of the compounds on display as a polar liquid, non-polar liquid, polar solid or non-polar solid.
Saved
Normal
BIIU
X2 X² -
fr DI e
Polar liquid:
Polar solid:
Non-polar liquid:
Non-polar solid:
MacBook Air
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Suppose that a person wants to remove an oil spot from a shirt using soap and water. Label the oil, the water, and the polar and
nonpolar ends of one of the soap molecules in the diagram.
oil
Answer Bank
polar
non-polar
water
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Please answer the following question:
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Explain how the water is able to hang off the bottom of the hand based on polarity.
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Drug: ClaritinDraw your molecule (or print out the line structure) on a separate page. 2) For each central atom in your molecule, decide if it is polar or nonpolar.
3) For those central atoms that are polar,
a. Color the central atom RED if it forms hydrogen bonds
b. Color the central atom GREEN if it forms dipole-dipole interactions
4) Make a reasonable prediction stating whether your molecule will be soluble in water or not soluble and explain your reasoning. If your molecule seems to be borderline in polarity, making it difficult to predict solubility, explain your reasoning and the difficulty involved.
5) Find a source (Pubchem, Merck Index, PDR, RxList etc.) that discusses the water solubility of your drug. Compare your predictions with the information you find on the water-solubility of your drug and comment on any discrepancies.
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Draw what one molecule of ethanol would look like when dissolved. Show 1 molecule of ethanol and 6 molecules of water.
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1. One common chemical contaminant that is removed
from water during water treatment. How is it removed
and why? Include chemical formulas and chemical
reactions.
2. One chemical that is added to water during water
treatment. How is it added to water and why? Include
chemical formulas and chemical reactions.
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Explain water activity. Comment on decreased water activity. please explain in details
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I Review | Constants | Periodic Table
When water is in the liquid state, some of the water
molecules will have enough kinetic energy to escape
The table here shows the vapor pressure of water at different temperatures. Use this table to answer the following questions.
Vapor
Temperature
(°C)
from the surface of the water in the form of water
pressure
vapor (gas). The pressure resulting from this gas is
called the vapor pressure. If the temperature gets
high enough, the vapor pressure will be the same as
the atmospheric pressure. At this point, the liquid will
boil.
(mmHg)
0.0
10.0
20.0
18
30.0
32
37.0
47
40.0
55
50.0
93
60.0
149
70.0
234
80.0
355
90.0
528
100.
760.
Part A
You are in a mountain range with atmospheric air pressure of 520 mmHg, and you wish to boil some eggs. What is the
approximate boiling point of the water at this air pressure?
Express your answer as an integer and include the appropriate units.
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The shapes of molecules determine many of their properties. Imagine molecules of water having a linear shape – like the molecules of Carbon Dioxide. Speculate how this would affect properties of water.
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Draw a molecular level of what the water sample looks like at 90°C.
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Give an example of a unique property of water and describe how it came about.
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Physical Analysis of Water Samples
A. WATER POLLUTION VIDEO
a. Describe the three categories of water pollution.
b. What is eutrophication? What are the
uses and effects of eutrophication?
c. Describe the
emical pollutants in water.
FOR PLMYSICAL SCENCE DEPT USE ONLY
d. Describe the ways of reducing water pollution.
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2 things about water treatment (NOT WASTEWATER)
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When rain water interacts with atmospheric carbon dioxide, it produces what?
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1. sketch a few water molecules and label the polar covalent bonds and show where the hydrogen bonds are located
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1. Water is necessary for life on Earth. Water is made up of hydrogen and oxygen atoms (H2O); however, biological life in water
depends on another form of oxygen. These organisms need molecular oxygen (O2), which they use to perform aerobic
respiration. This molecular oxygen fits into spaces between water molecules and is available for aquatic organisms to use.
How do you think molecular oxygen gets into the water? Choose two of the following choices.
Select all that apply:
From the oxygen atoms that are part of the water molecules.
From oxygen that dissolves into water from the atmosphere.
From oxygen that is given off by aquatic organisms during respiration.
From oxygen that is given off by aquatic plants during photosynthesis.
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Air is composed of many gases, while water is composed of a pure substance. Which best compares air and water?
Group of answer choices
A. Air is a mixture of two or more components that keep their own identifying properties, while water is composed of compounds that combine to form a mixture.
B. Air is a mixture of two or more components that keep their own identifying properties, while water is composed of elements that combine to form a compound.
C. Air is a compound of two or more components that keep their own identifying properties, while water is composed of mixtures that combine to form a compound.
D. Air is a compound of two or more components that keep their own identifying properties, while water is composed of elements that combine to form a mixture.
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Which of the following are NOT important in regards to water's polarity?
O The positively charged hydrogen atom is attracted to the negatively charged oxygen atom.
It will bond with four other water molecules through hydrogen bonding.
It has a slightly positive end and a slightly negative end.
OIt forms ionic bonds.
多
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- Directions: Analyze each of the following statements whether it describes the property of water. Write TRUE if the statement is correct but if it Is False, change the underlined word or group of words to make the whole statement true. Write your answers on the space provided. 4. The oxygen atom of water is covalently bonded with the two hydrogen atoms in a water molecule. 5. As we raise the temperature of water this would mean we are increasing its average kinetic energy. 6. The sticking of water molecules on the wall of a beaker would display adhesion. 7. The bond that holds each water molecule with the adjacent water molecule is a hydrogen bond. 8. Substances that are polar and ready to be dissolved in water are called hydrophobic. 9. The type of intermolecular force which is a polar covalent bond makes the water polar and explains why water is a universal solvent. 10. High surface tension is the property of water that allows the lucky fishes to. stay on lakes where the water takes a…arrow_forwardDirections: Analyze each of the following statements whether it describes the property of water. Write TRUE if the statement is correct but if it Is False, change the underlined word or group of words to make the whole statement true. Write your answers on the space provided. 7. The bond that holds each water molecule with the adjacent water molecule is a hydrogen bond. 8. Substances that are polar and ready to be dissolved in water are called hydrophobic. 9. The type of intermolecular force which is a polar covalent bond makes the water polar and explains why water is a universal solvent. 10. High surface tension is the property of water that allows the lucky fishes to. stay on lakes where the water takes a lot of heat before it gets hot.arrow_forwardINSTRUCTIONS — Do not copy in Google or Bartleby. Plagarize Checker will be used — Highlight the "Key Ideas/concept" of your answerarrow_forward
- Sketch several water molecules, showing all covalent and hydrogen bonds. Be sure to indicate the polarity of each water molecule.arrow_forwardDescribe the physical property of water that you find interesting. Also, describe the chemical property of water that you find the most interestingarrow_forwardList the main steps involved in treating water for domestic uses?arrow_forward
- What category of environmental chemistry that deals with chemical phenomena in all types ofwater and natural waters?arrow_forwardTrue or False: The nonpolar nature of water is an integral feature to its role as "the solvent of life." Group of answer choices True Falsearrow_forwardOne chemical that is added to water during water treatment. How is it added to water and why? Include chemical formulae and chemical reactions.arrow_forward
- Water samples found in the laboratory and in the environment may differ significantly in a number of ways. Consider the composition of deionized water, freshwater, brackish water, and seawater. Predict the relative conductivity of these four types of water and rank them from lowest to highest. Lowest conductivity Choose... Choose... Choose... Choose... Highest conductivity < ВАСК Question 9 of 9 REVIEW here to searcharrow_forwardUnder what conditions can an ionic compound conduct electricity?arrow_forwardHi, what is an example of water resisting temperature change? and why?arrow_forward
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