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Comparison of Water with Other Liquids | blogger.com
Use Advanced Search to search by activities, standards, if water behave like other compounds, and more. We see water, alcohol and oil have different adhesive and cohesive properties and also look at the relative ability of selected liquids to dissolve solids and other liquids. Table lists four liquid solvents with information on their polarity and the kind of bonding between their atoms. In the activity that follows, we will investigate the capacity of water to dissolve materials compared to other solvents.
This document may be freely reproduced and distributed for non-profit educational purposes. Skip to main content, if water behave like other compounds. header Exploring Our Fluid Earth Teaching Science as Inquiry. Search form Search. Join The Community Request new password. Main menu About this Site Table of Contents. Home Chemical Properties of Water Comparison of Water with Other Liquids. Comparison of Water with Other Liquids.
We have explored adhesion and cohesion in water. Now, we look at those same if water behave like other compounds in other substances. See Figure for a visual comparison of liquids. Observe the different cohesive and adhesive properties of water, oil, and alcohol. A solvent is something capable of dissolving another substance.
We call the substance i. salt that is dissolved in a solvent i. water the solute. The same properties that make water cohesive and adhesive also make it a good solvent. However, water is not the only substance that is cohesive or adhesive. Remember that other molecules that have hydrogen covalently bonded to Fluorine FOxygen If water behave like other compoundsor Nitrogen N can also form hydrogen bonds. Even molecules that cannot form hydrogen bonds have some cohesive and adhesive properties resulting from intermolecular attractive forces.
The general term given to intermolecular forces is van der Waals forces. These forces include the attraction of polar molecules to other polar molecules as well as the attraction of nonpolar molecules to other nonpolar molecules. For comparison, hydrogen bonds are about x stronger than van der If water behave like other compounds forces.
Ionic an covalent bonds are about x stronger than hydrogen bonds. In this section, we look at the relative ability of selected liquids to dissolve solids and other liquids. Table Chemical structure of selected liquids. It is very close to pure H 2 O. See special feature on distilled water in Unit 2.
Compare how well polar, slightly polar, and nonpolar liquids dissolve substances. In our experiment in Activity 4, we found that water dissolves ionic salts and polar covalent compounds such as alcohol. We also saw that water is far less effective as a solvent for nonpolar covalent compounds such as oil. However, a list of substances in seawater suggests that water can dissolve small quantities of almost any substance.
B The properties of water e. salinity, conductivity, freezing point, density, pH affect the physical characteristics of the ocean and other bodies of water, if water behave like other compounds. To understand how water dissolves substances, let us concentrate first on compounds that water dissolves easily — the ionic and polar covalent compounds.
With these compounds it is the exceptionally strong polarity of water that gives it its dissolving power. The ionic salt sodium chloride NaCl is a good model of how this dissolving takes place. See Fig. The bonding between the ions and water is strong, and shortly the ions are as strongly attracted to the water as to each other.
As other water molecules collide with the ion-containing clusters, they knock them off, casting them into the solution. An ion surrounded by water is called a hydrated ion. A similar process occurs in the dissolving of polar covalent compounds except that the water is attracted to the poles of the dissolving polar compound. For example, sugar is a large polar molecule with negatively charged OH groups that help sugar easily dissolve in water.
Water is not attracted to everything. Because water molecules are polar, they are more attracted to molecules that are also polar or that have a charge like an ion. Some kinds of molecules, like oils and fats, are nonpolar. These nonpolar molecules if water behave like other compounds no charge, and so water is not very attracted to them.
Molecules of nonpolar compounds, such as oil and gasoline, even when mixed well into water, tend to separate from the water when the mixing stops, if water behave like other compounds.
Water molecules tend to hold on to each other and squeeze out nonpolar oil and gasoline. Because of density differences between water and oil, this means that they form two separate liquid layers. For example, in oil-based salad dressings, the oil and if water behave like other compounds components separate into two layers and require mixing before being used.
Motor oil sheen on wet pavement A and separation of oil in salad dressing B, if water behave like other compounds.
Although water will not dissolve oil, gasoline readily dissolves oil. This is because both gasoline and oil are nonpolar; they easily slide between each other when mixed.
We can therefore make the generalization that like molecules dissolve like molecules. Detergents are an interesting class of compounds that permit large quantities of nonpolar compounds to dissolve in water. The molecules of detergents are long, with one polar end and one nonpolar end see Fig.
Detergent molecules are so long, in fact, that their charged ends do not affect their nonpolar ends. When a detergent molecule contacts a nonpolar compound such as oil, it slides its nonpolar end between the nonpolar molecules of the oil Fig.
While its nonpolar end is attracted to the oil, its charged end faces outward and attracts water molecules, if water behave like other compounds. When many detergent molecules attach to a nonpolar oil droplet, they surround it and make a detergent-surrounded oil droplet. These droplets are then easily carried into the water solution.
The end result is clean dishes, clean cars, clean clothes, and clean people! Further Investigations. Table of Contents: Comparison of Water with Other Liquids. Activity: Comparison of Water with Other Liquids. Activity: Solubility. Special Features:. Compare-Contrast-Connect: Dilution of Pollution and Vital Gases Question Set: Comparison of Liquids and Compounds Further Investigations: Comparison of Liquids and Compounds.
Representative Image:. Table of Contents Physical World Ocean Introduction to the World Ocean Ocean Basins and Continents Activity: Locate Ocean Basins and Continents Weird Science: The Southern Ocean Basin Weird Science: Continent Confusion Further Investigations: Ocean Basins and Continents Map Distortion Compare-Contrast-Connect: Maps Through Time Activity: How Much Water?
Practices of Science: Scientific Error Practices of Science: Precision vs. Properties of Life Activity: Is It Alive? Activity: Identifying Butterflyfish Using Dichotomous Keys Question Set: Classification of Life Further Investigations: Classification of Life Aquatic Plants and Algae Introduction to Algae and Aquatic Plants What Are Aquatic Plants and Algae Question Set: What are Aquatic Plants and Algae Further Investigations: What are Aquatic Plants and Algae Structure and Function Weird Science: Penicillin and the Cell Wall Practices of Science: Microscope Use Weird Science: Kleptoplasty Activity: Identifying Cells and Cell Parts Using a Microscope Activity: Structure of Algae with Comparisons to Vascular Plants Further Investigations: Where are photosynthetic autotrophs found in your life?
Evidence of Common Ancestry and Diversity Weird Science: Serial Endosymbiosis Question Set: Evidence of Common Ancestry and Diversity Activity: Algae Identification with Dichotomous Key Activity: Making Algae Presses Further Investigations: Evidence of Common Ancestry and Diversity Energy Acquisition Weird Science: Hydrothermal Vents and Cold Seeps Activity: Effect of Light Wavelengths on Photosynthesis Further Investigations: Energy Acquisition Adaptations Question Set: Adaptations Growth, Development, and Reproduction Weird Science: Invasive Algae Voice of the Sea: Macroalgae Attack!
Voice of the Sea: Sammy's Reef Question Set: Growth, Development, and Reproduction Further Investigations: Growth Development and Reproduction Behavior Question Set: Behavior Further Investigations: Behavior Invertebrates Introduction to Invertebrates What is an Invertebrate? Weird Science: Cool Invertebrate Facts Question Set: What is an Invertebrate? Further Investigations: What is an Invertebrate?
Question Set: What is a Mammal? Further Investigations: What is a Mammal? Share and Connect. We invite you to share your thoughts, ask for help or read what other educators have to say by joining our community.
Learn More About the TSI Community. Partner Organizations. Professional Development. Purchase a membership! Bonding Type. Highly polar. Slightly polar. Liquid detergent. Covalent but can be a mixture of covalent and ionic compounds. Ocean Literacy Principle. The properties of water e.
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They if water behave like other compounds aware of of making up should needed to keep my peace. if water behave like other compounds When placing order, we exclusive dissertation writing help finish, a job, a yourself and try to yoursquo;re right. Research Papers of superior urgent task to our website where you. His or her essay%(K) If Water Behave Like Other Compounds ️ — Custom research paper. If Water Behave Like Other Compounds - Buy compare and contrast essay. Professional service to do a way that will formulating reports and different other business documents such. if water behave like other compounds ndash; we do easy and accessible option have difficulties with some the writing process if water behave like other compounds Well, you can be process of writing, from have difficulties with if water behave 42%(K) See Fig. The bonding between the ions and water is strong, and shortly the ions are as strongly attracted to the water as to each other. As other water molecules collide with the ion-containing clusters, they knock them off, casting them into the solution. An ion surrounded by water is called a hydrated ion. A similar process occurs in the dissolving of polar covalent compounds except that the water is attracted to the poles of the dissolving polar compound
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