glucopyranose | 390.34 | 109-112 | 452 | 1.3 | 3. Phenomena and data The reaction in pear shape flask is not vigorously because the amount reflexed solution can even not bring the raw material attached on condenser back to flask. The color of the liquid in reactor is brown‚ with gentle swirling‚ glucose at the bottom can plenary react with acetic anhydride. In the ice water‚ a considerable gelatinous yellow brown solid come from the dark brown solution. The crude product has the weight of 6.92g (crude
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not spread out to cover the bottom of the flask ‚ and if enough is placed in the flask to cover the bottom‚ it exhibits a strongly convex meniscus‚ where the meniscus of water is concave . Mercury will not wet the glass‚ unlike water and many other liquids ‚[1] and if the glass is tipped‚ it will ’roll’ around inside. APPLICATIONS Dew drops adhering to a spider web. Cohesion causes water to form drops‚ surface tension Causes them to be nearly spherical‚ and adhesion keeps the drops in place
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mixing materials can achieve dramatic permanent changes to the materials‚ dissolving lies somewhere between these two examples. Hesse (1992) states that the most universal example of dissolving involves a solid and a liquid‚ usually water. When a solid called a solute is mixed with a liquid called a solvent‚ the solute particles breakdown and spread them selves out to be closer to the solvent particles. This mixture is then called a solution. If the solute is coloured it will be easy to see a visible
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mayonnaise similar to manufactured mayonnaise. Introduction The purpose of this experiment is to determine the methods and techniques required to produce mayonnaise. Mayonnaise is an emulsion‚ which means that it is a stable combination of two liquids that are immiscible. They key to this concept is that the combination must be stable. Water and oil‚ for example‚ do not combine to form an emulsion because of hydrogen bonds that form between each other in water molecules. These bonds prevent oil
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com/dictionary/aerodynamics Other: aerios‚ concerning the air‚ and dynamis‚ which means force. http://www.grc.nasa.gov/WWW/K-12/airplane/bga.html Bernoulli’s Principle: • The relationship between the velocity and pressure exerted by a moving liquid • States that for an inviscid flow‚ an increase in the speed of the fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid’s potential energy. • states that the faster a fluid (such as air or water) flows over
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faster and longer the particle is centrifuged‚ the smaller the particles are that will be separated. Separation occurs by causing the larger particles to separate to the bottom as a particle or pellet‚ and the smaller will remain suspended in the liquid‚ or supernatant. Due to smaller particles separating out first‚ centrifugation is often done in small steps so that the supernatant takes off all larger unwanted cells first. The basic process of centrifugation: 1) The tissue must be homogenized
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water) become denser. Two experiments that I found to be quite similar to this one were the Density Column and the Bubbling Lava Lamp. The Density Column measures the density of seven different liquids by layering them on top of each other. By doing this experiment‚ one is able to find out which liquid is the most dense; with the order ascending
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dichloromethane and the solution was poured into a separatory funnel. 2. 20 ml of aqueous sodium bicarbonate solution was added to the dichloromethane. A stopper was placed on the separatory funnel and was shaken and pressure was frequently released. The 2 liquids separated into clear layers and the lower layer (dichloromethane layer) was tapped into an Erlenmeyer flask. The aqueous layer was placed into a 400 ml beaker. The dichloromethane was placed back in the separatory funnel. 3. The dichloromethane was
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Lab # 4 Determination of Density of Liquids Name: Lab Partner: Period: 3 Date Completed: 9/23/2014 Date Submitted: 9/29/2014 Data TABLE 4 DENSITY OF SALT SOLUTIONS-INDIVIDUAL GROUP’S RESULTS Concentration (%) Mass (g) Volume (mL) Density (g/mL) 0 9.9522 10.00 0.9952 4 10.1291 10.00 1.013 8 10.5233 10.00 1.052 12 10.7487 10.00 1.075 16 11.0297 10.00 1.103 Unknown # 10.6234 10.00 1.062 Calculations 1. Show all density
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Activity; Making a lava lamp effect.Number of Children; 5/6 Setting; Primary School Year 3. Preparation Time; 15 minutes. Age of Children; 7-8 Years old. Activity Time; 30 minutes. Resources: | Rationale: | Clear plastic bottle. 3/4 cups of water. Vegetable oil. Food colouring. Alka –Seltzer tablets. | Get your clear plastic empty bottle‚ put 3-4 cups of cold water into the bottle‚ then add the vegetable oil till its nearly full up to the top‚ then add 10-15 drops of food colouring
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