This document discusses the properties of water. It explains that water is an inorganic compound with the chemical formula H2O. Its molecules form extensive hydrogen bonds that result in unusual properties including high melting and boiling points, high specific heat capacity, and high thermal conductivity. These properties are due to the strong hydrogen bonding between water molecules, which requires a significant amount of energy to break apart the bonds. The document acknowledges the importance of understanding water's molecular structure and intermolecular forces to explain its distinctive properties.
explain why these three properties of water are importantmelting .pdfjeetumordhani
explain why these three properties of water are important?
melting and freezing
cohesive and adhesive
An excellent solvent
Solution
Water melting and freezing properties are important because these properties are main colligative
properties useful to prepare polar biological & pharmaceutical products suitable to the internal
human body environment
The cohesive forces (cohesion) & adhesive forces of water molecules enable to acquire elastic
tendency with considerable surface area promote solubility. This tendency is referred as surface
tension. Surface tension of any fluid decreases with increasing temperature. This is due to
existence of cohesive intermolecular forces between molecules of the fluid is reduced and it is
based on the surrounding environment with adhesive intermolecular forces & viscosity of the
fluid, molecular thermal activity at the liquid interface
For example, water is a universal solvent and it has both polar because it has both positive charge
(H+ or H3O+) and negative charge (OH-). This polarity enables water to make substances to
dissolve in it as charged species. On the other hand, water molecules possess a higher attractive
power to each other so that these forces are referred as cohesive forces responsible for “surface
tension” phenomenon” and these attractions are predominantly due to hydrogen bonding. For
instance, 2 to 3 drops of water between the cover slip is imparted adhesive forces (another
example is capillary rise due to forces between glass and water in capillary tube) between the
two glass cover slips result in adhesion instead of cohesion that potentially differentiate
intermolecular forces between two different substances namely water and silicon. These
intermolecular forces render glass surface as hydrophilic. These intermolecular forces are
decreased as the temperature increases due to increase in molecular thermal activity of the fluid
molecules ate the interface of water molecules.
An excellent solvent
Water is a universal polar solvent and it has hydrogen bonding associated with highest heat
capacity and is referred as “specific heat capacity”. This specific heat is predominantly due to
intermolecular and intermolecular hydrogen bonding. In nature on land when heat is absorbed
result in breaking of hydrogen bonds specifically followed by production of heat. Normally
ocean water cool little bit slower when compared to the land water because of more heat
capacity. This sterile solvent has ability to dissolve a majority of biological products to prepare
pharmaceutical products finally used as diluents in saline, injectables etc.
Water properties and the biological importance of water:
1). Due of the presence of hydrogen bonds and strong intermolecular forces, water has high
specific heat index. Specific heat capacity of water is defined as; the amount of heat (energy in
joules) required for raise of temperature of water per unit mass by 10C.
Our body temperature is maintained higher than the surroundin.
these slides include the basic structure of water how they form bonds how they interact and its physical and chemical properties it also include the biochemical importance of water .
Title: Structure and Properties of Water
Introduction:
Water is a vital molecule for all forms of life. Its unique structure and properties are crucial for various biological, chemical, and physical processes. Understanding the molecular structure and the resulting properties of water can provide insight into its essential role in nature and science.
1. Molecular Structure of Water:
Water (H₂O) is composed of two hydrogen atoms covalently bonded to one oxygen atom. The oxygen atom is more electronegative than hydrogen, resulting in a polar covalent bond. This polarity creates a partial negative charge near the oxygen atom and a partial positive charge near the hydrogen atoms.
2. Geometry and Bond Angles:
Water has a bent or V-shaped molecular geometry due to the two lone pairs of electrons on the oxygen atom. The bond angle between the hydrogen-oxygen-hydrogen (H-O-H) atoms is approximately 104.5 degrees. This angle is less than the ideal tetrahedral angle of 109.5 degrees due to the repulsion between the lone pairs of electrons.
3. Hydrogen Bonding:
One of the most significant properties of water is its ability to form hydrogen bonds. Each water molecule can form up to four hydrogen bonds: two through its hydrogen atoms and two through the lone pairs on its oxygen atom. These hydrogen bonds are responsible for many of water's unique properties.
4. High Cohesion and Adhesion:
Cohesion refers to the attraction between water molecules, while adhesion refers to the attraction between water molecules and other surfaces. The hydrogen bonds contribute to water's high cohesion, which is why water has a high surface tension. This allows insects to walk on water and causes water droplets to form. Adhesion helps water to stick to other surfaces, which is important for processes like capillary action in plants.
5. High Specific Heat Capacity:
Water has a high specific heat capacity, meaning it can absorb a lot of heat energy before its temperature increases significantly. This property helps to moderate Earth's climate and allows organisms to maintain stable internal temperatures.
6. High Heat of Vaporization:
Water requires a significant amount of energy to transition from a liquid to a gas due to the strength of hydrogen bonds. This property is crucial for regulating temperature through processes like sweating and transpiration.
7. Density and Ice Formation:
The density of water decreases as it freezes. In liquid water, molecules are closely packed but still moving, whereas in ice, water molecules form a crystalline lattice that is less dense than liquid water. This is why ice floats on water, providing insulation for aquatic life in cold environments.
8. Solvent Properties:
Water is often referred to as the "universal solvent"
Gen Chem 1 COT 1 Water Properties Lesson planJennetteBelliot
Unique properties of water
Water is polar. ...
Water is an excellent solvent. ...
Water has high heat capacity. ...
Water has high heat of vaporization. ...
Water has cohesive and adhesive properties. ...
Water is less dense as a solid than as a liquid.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
explain why these three properties of water are importantmelting .pdfjeetumordhani
explain why these three properties of water are important?
melting and freezing
cohesive and adhesive
An excellent solvent
Solution
Water melting and freezing properties are important because these properties are main colligative
properties useful to prepare polar biological & pharmaceutical products suitable to the internal
human body environment
The cohesive forces (cohesion) & adhesive forces of water molecules enable to acquire elastic
tendency with considerable surface area promote solubility. This tendency is referred as surface
tension. Surface tension of any fluid decreases with increasing temperature. This is due to
existence of cohesive intermolecular forces between molecules of the fluid is reduced and it is
based on the surrounding environment with adhesive intermolecular forces & viscosity of the
fluid, molecular thermal activity at the liquid interface
For example, water is a universal solvent and it has both polar because it has both positive charge
(H+ or H3O+) and negative charge (OH-). This polarity enables water to make substances to
dissolve in it as charged species. On the other hand, water molecules possess a higher attractive
power to each other so that these forces are referred as cohesive forces responsible for “surface
tension” phenomenon” and these attractions are predominantly due to hydrogen bonding. For
instance, 2 to 3 drops of water between the cover slip is imparted adhesive forces (another
example is capillary rise due to forces between glass and water in capillary tube) between the
two glass cover slips result in adhesion instead of cohesion that potentially differentiate
intermolecular forces between two different substances namely water and silicon. These
intermolecular forces render glass surface as hydrophilic. These intermolecular forces are
decreased as the temperature increases due to increase in molecular thermal activity of the fluid
molecules ate the interface of water molecules.
An excellent solvent
Water is a universal polar solvent and it has hydrogen bonding associated with highest heat
capacity and is referred as “specific heat capacity”. This specific heat is predominantly due to
intermolecular and intermolecular hydrogen bonding. In nature on land when heat is absorbed
result in breaking of hydrogen bonds specifically followed by production of heat. Normally
ocean water cool little bit slower when compared to the land water because of more heat
capacity. This sterile solvent has ability to dissolve a majority of biological products to prepare
pharmaceutical products finally used as diluents in saline, injectables etc.
Water properties and the biological importance of water:
1). Due of the presence of hydrogen bonds and strong intermolecular forces, water has high
specific heat index. Specific heat capacity of water is defined as; the amount of heat (energy in
joules) required for raise of temperature of water per unit mass by 10C.
Our body temperature is maintained higher than the surroundin.
these slides include the basic structure of water how they form bonds how they interact and its physical and chemical properties it also include the biochemical importance of water .
Title: Structure and Properties of Water
Introduction:
Water is a vital molecule for all forms of life. Its unique structure and properties are crucial for various biological, chemical, and physical processes. Understanding the molecular structure and the resulting properties of water can provide insight into its essential role in nature and science.
1. Molecular Structure of Water:
Water (H₂O) is composed of two hydrogen atoms covalently bonded to one oxygen atom. The oxygen atom is more electronegative than hydrogen, resulting in a polar covalent bond. This polarity creates a partial negative charge near the oxygen atom and a partial positive charge near the hydrogen atoms.
2. Geometry and Bond Angles:
Water has a bent or V-shaped molecular geometry due to the two lone pairs of electrons on the oxygen atom. The bond angle between the hydrogen-oxygen-hydrogen (H-O-H) atoms is approximately 104.5 degrees. This angle is less than the ideal tetrahedral angle of 109.5 degrees due to the repulsion between the lone pairs of electrons.
3. Hydrogen Bonding:
One of the most significant properties of water is its ability to form hydrogen bonds. Each water molecule can form up to four hydrogen bonds: two through its hydrogen atoms and two through the lone pairs on its oxygen atom. These hydrogen bonds are responsible for many of water's unique properties.
4. High Cohesion and Adhesion:
Cohesion refers to the attraction between water molecules, while adhesion refers to the attraction between water molecules and other surfaces. The hydrogen bonds contribute to water's high cohesion, which is why water has a high surface tension. This allows insects to walk on water and causes water droplets to form. Adhesion helps water to stick to other surfaces, which is important for processes like capillary action in plants.
5. High Specific Heat Capacity:
Water has a high specific heat capacity, meaning it can absorb a lot of heat energy before its temperature increases significantly. This property helps to moderate Earth's climate and allows organisms to maintain stable internal temperatures.
6. High Heat of Vaporization:
Water requires a significant amount of energy to transition from a liquid to a gas due to the strength of hydrogen bonds. This property is crucial for regulating temperature through processes like sweating and transpiration.
7. Density and Ice Formation:
The density of water decreases as it freezes. In liquid water, molecules are closely packed but still moving, whereas in ice, water molecules form a crystalline lattice that is less dense than liquid water. This is why ice floats on water, providing insulation for aquatic life in cold environments.
8. Solvent Properties:
Water is often referred to as the "universal solvent"
Gen Chem 1 COT 1 Water Properties Lesson planJennetteBelliot
Unique properties of water
Water is polar. ...
Water is an excellent solvent. ...
Water has high heat capacity. ...
Water has high heat of vaporization. ...
Water has cohesive and adhesive properties. ...
Water is less dense as a solid than as a liquid.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
3. This lesson will teach you about the properties of water. As
a result, you are expected to:
1. explain water's properties using its molecular structure
2. explain water's properties in terms of intermolecular
forces; and
3. acknowledge the significance of water's properties.
5. Water is an inorganic compound.
It is a chemical compound that
lacks carbon - hydrogen bonds,
that is, a compound that is NOT
formed by a living organism.
It is a chemical compound that
does not contain a carbon atom.
6. Water is colorless, odorless,
tasteless, but it is considered as
the most important compound
in the body.
7. In fact, 50% of water or
more is in the normal
adult`s body.
The capability of dissolving
more substances than any
other liquid made water as
“universal solvent”.
8. Water is the chemical substance with chemical formula H2O.
H2O
9. The molecules of water have extensive
hydrogen bonds resulting in unusual
properties in the condensed form. This also
leads to:
high melting and boiling point
high specific heat capacity
high thermal conductivity
high latent heat of vaporization
high cohesion and adhesion
strong surface tension
highly
polar
low
viscosity
10. Why water has high melting and boiling point?
Water has a high melting and boiling point compared to other
similar molecules because:
• It has strong intermolecular forces due to hydrogen bonding.
Hydrogen bonding occurs when the hydrogen atoms in water
are attracted to the oxygen atoms in other water molecules,
creating a polarized charge separation. This makes water
molecules more difficult to separate, and requires more
energy in the form of heat.
• The size of the water molecule also contributes to its high
melting and boiling point.
11. Why water has high specific heat capacity?
Specific heat is defined by the amount of heat needed to raise
the temperature of 1 gram of a substance 1 degree Celsius (°C).
Water has high specific heat capacity because of the strength of
the hydrogen bonds. It requires a significant of energy to
separate these bonds. In short, it takes more energy to increase
the temperature of water compared to other substances.
12.
13. What cause water high thermal conductivity?
Water has high thermal conductivity due to the following factors:
• Hydrogen bonding: Water molecules have a unique ability to
form hydrogen bonds with each other.
• High specific heat capacity: Water has a high specific heat
capacity, which means it can absorb a significant amount of heat
energy without undergoing a large temperature change.
• Presence of impurities, dissolved substances, or the pH level of
the water can influence the thermal conductivity of water.
• It is directly related to rising temperatures because it increases
solubility and ionic mobility; ions move faster in warmer water.
15. Cohesion is responsible for water's continuous flow and surface tension.
Adhesion is responsible for water's ability to stick to many surfaces and
form capillary action.
16. The water is the least viscous
and flows the fastest
because its molecules are
the furthest apart which
means less internal friction.
In the syrup, the molecules are much
closer together which means there is
a lot more internal friction. That
means that its flow rate is lower and
that its more viscous.
The soap is the most viscous out of the
water and the syrup. The molecules are
very tighly packed together. Because
they are so closed together, there is a lot
of internal friction.
