Cohesion and adhesion of distilled‚ tap‚ salt‚ and soapy H2O Purpose: to test cohesion and adhesion of distilled H2O‚ tap H2O‚ salt H2O‚ and soapy H2O Materials: -pipet -penny -distilled H2O -tap H2O -salt H2O (see step 1) -soapy H2O (see step 2) -paper towel Procedure: 1. To make salt H2O mix salt with distilled H2O 2. To make soapy H2O mix soap with distilled H2O 3. Place penny with the Lincoln side up on top of a piece of paper towel 4. Fill pipet with distilled H2O and hold it
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on Earth. One property is cohesion. The cohesion property is properly defined as the binding of water molecules by hydrogen bonds. Water has this property as a result of the chemical bonding between water. Cohesion of the strong hydrogen bonds allows the water molecules to stick together‚ almost as a unit of one. A force exerted on one of the molecules will be exerted on all of the adjacent molecules as a result of cohesion. Cohesion‚ often with the cooperation of adhesion‚ the clinging of one substance
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A paper towel which can also be known as kitchen paper is an absorbent towel made up of cellulose fibers‚ which also make up other plants like cotton and wood instead of cloth material. Although paper towels cannot be washed and used again‚ paper towels are disposable. The key to why paper towels soak up water is the cellulose fibers. Cellulose fibers are giant molecules which are made up of smaller molecules called sugar molecules (inedible) joined together. The liquid grips onto the cellulose fibers
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high specific heat due to the hydrogen bonds. Because of this‚ water requires a large amount of energy to raise its temperature by just one degree. The polar nature of water allows the water molecules to attach to one another this is called cohesion. Cohesion gives water its surface tension where the water molecules bind to each other making it difficult for the surface to be broken. b.) Water is known as the universal solvent. Its polarity allows it to ionize materials by breaking down ionic
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Processed Data: Table 1: Data in measuring the height of the water Trial | Height of water (m) | 1 | 0.032 | 2 | 0.032 | 3 | 0.032 | Average: | 0.032 | Table 2: Values for measuring the radius of capillary Temperature | 30 degrees Celsius | Density @ 30 degrees Celsius | 995.67 kg m-3 | Acceleration due to gravity | 9.8 m s2 | Height of water | 0.032 m | Surface tension of water@ 30 degrees Celsius | 7.118 X 10-2 N m | Radius of capillary tube | 4.5592825 X 10-4 m |
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electrical forces while covalent bonds are a lot stronger and are formed when atoms are forced to share electrons. Water has different properties. One is cohesion which is the attraction between molecules of a given substance. Cohesion in water molecules causes surface tension which makes the water molecules stick together. Another is adhesion which is the attraction of molecules in different substances. There are two sides to a pH scale‚ base and acid. Acids are a compound of substances that release
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The first property of water is that it is an excellent solvent. This is because of the chemical composition and physical attributes of water. Since water is polar‚ it allows water molecules to become attracted to different molecules. The attraction can be so powerful that it can disrupt the attractive forces of the different molecules. For example‚ water can be heavily attracted to salt that it can disrupt the forces that hold sodium and chloride‚ therefore dissolving it. The second property of water
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evolved morphological‚ anatomical and physiological adaptations to obtain‚ process‚ transport and store raw materials and energy under varying conditions. capture and conversion of radiant energy to chemical energy takes place in chloroplasts (chloroplasts are localized in specialized tissues) products of photosynthesis are used in respiration‚ growth‚ repair‚ maintenance‚ storage. energy consuming reactions must take place for the substances of photosynthesis to be transported around the plant
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Mastering Concepts 2.1 1. Which chemical elements do organisms require in large amounts? Carbon‚ oxygen‚ hydrogen‚ nitrogen‚ sulfur‚ and phosphorus are the chemical elements that organisms require in large amounts. 2. Where in an atom are protons‚ neutrons‚ and electrons located? An atom’s protons and neutrons are in its nucleus. A cloud of electrons surrounds the nucleus. 3. What does an element’s atomic number indicate? An atom’s atomic number indicates the number of protons in its nucleus
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from overheating or freezing. Absorbency The ability to take in a material Adhesion The tendency of water to stick to other substances Buoyancy The ability of a fluid to exert an upward force on an object that is immersed in the fluid Capillary Action The process that moves water through a narrow porous space (cohesion helps the transfer of water up through fibers of plants) Needed for plants to survive Cohesion The attractive force between water molecules or the tendency of water molecule
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