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Observe for about 1 minute. Students may also mention the white streaks in the water from the sugar coating. The color comes off and moves through the water in a circular pattern. There are actually two processes happening in this activity.
The color and sugar are dissolving in the water but they are also diffusing. Knowing what you do about the polarity of water, why do you think water dissolves sugar? Students may think that sugar is made of ionic bonds like salt.
Or they might think that sugar has positive and negative areas and this is why water is attracted to it. Explain Show students how the polar areas of a sucrose molecule cause it to dissolve in water.
Explain to students that sugar is made of large molecules called sucrose. Each sucrose molecule is made of atoms that are covalently bonded.
The chemical formula for sucrose is C12H22O What do these letters and numbers mean? Sucrose is made up of 12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms.
Project the image Sucrose. Explain that the first picture is a ball-and-stick model of a single sucrose molecule. The next picture is a space-filling model of a single sucrose molecule.
The last picture is two sucrose molecules attracted to each other. These two molecules will separate from each other when sugar dissolves. Point out that in the areas on a sucrose molecule where oxygen is bonded to hydrogen O—H bondthe oxygen is slightly negative and the hydrogen is slightly positive.
This makes sucrose a polar molecule. Project the image Water Dissolves Sucrose. Explain that a sugar cube about a half a teaspoon of sugar is made up of at least one billion trillion sucrose molecules.
When sugar dissolves, these whole sucrose molecules separate from one another. The atoms that make up each molecule stay together as a sucrose molecule. Project the animation Sucrose. Explain that sucrose has polar areas caused by the same type of oxygen-hydrogen covalent bonds as in the water molecule.
Point out the O—H bonds on the outer edges of the molecule. Point out that the bonding of the oxygen and hydrogen in the sucrose makes parts of the sucrose molecule polar in a similar way as in a water molecule. The area near the hydrogen is positive blue and the area near the oxygen is negative red.
Project the animation Water Dissolves Sucrose.A Nice Cup of Tea By George Orwell Evening Standard, 12 January If you look up 'tea' in the first cookery book that comes to hand you will probably find that it is unmentioned; or at most you will find a few lines of sketchy instructions which give no ruling on several of the most important points.
THE SPIKE. It was late-afternoon. Forty-nine of us, forty-eight men and one woman, lay on the green waiting for the spike to open. We were too tired to talk much. By Dr.
Mercola. Many aches and pains are rooted in brain processes that can be affected by your mental attitude and emotions. While the mechanics of these mind-body links are still being unraveled, what is known is that your brain, and consequently your thoughts and .
Below is an essay on "Does Sugar Dissolve Faster in Boiling Water or Cold Water" from Anti Essays, your source for research papers, essays, and term paper examples. These factors affecting the rate of dissolving sugar particles are similar to that of other solutes.
A Nice Cup of Tea, the essay of George Orwell. First published: January 12, by/in Evening Standard, GB, London. How does the temperature of water affect how fast sugar can dissolve? Essay Sample. Predict We will do three different tests, dissolving the water in boiling, warm and cool water.
sugar could be used to allow the sugar to be more easily seen in the cup and more clearly observe the breaking down and dissolving of the sugar.