* Water * Salt * Evaporating dish * Candle * Matches * Ammonium hydroxide * Watch glass * Phenolphthalein * Paper towel * Cornstarch * Iodine * Cup * Alka-Seltzer tablet * Pipet * Milk * Vinegar * Copper II sulfate * Lead II nitrate Safety: * Goggles were worn. * Aprons were worn. * Lab station was cleaned up directly following experiments. * Hands were washed after experiments. * No eating or drinking took
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what solvent would work best to erase permanent marker. The solvents I tested were: lemon juice‚ vinegar‚ water‚ and rubbing alcohol. I tried each of these solvents on a permanent marker line on plastic‚ paper‚ fabric‚ and wood. In this research paper‚ I will be talking about what a permanent marker is‚ how they are made‚ why they work so well‚ what rubbing alcohol is and its common uses‚ what vinegar is and its common uses‚ what water is and why water is so essential‚ and what exactly lemon juice
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you saw with the the two-solid mixtures (Mixture 1 and Mixture 2)? If you cannot positively identify your mixture‚ discuss the possibilities for the mixture. The starch and mixture 2 are both similar because they both did not penetrate when the vinegar was added; when the water was added the laid on top and did not penetrate completely; when the iodine solution was added to both they it turned black. Mix 1 would be substances 2 and 4; Mix 2 would be 1 and 5. Compare
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(pepōn)‚ amongst others "a kind of gourd or melon". Purpose of the Study The general objective of the study is to produce vinegar out of Melon which can offer a good effect on human health. To produce vinegar without using chemicals or other substances that can harm both people and the environment. To introduce the potential of melon as good source of nutrients comprising vinegar with better result. Health Benefits of Melons Wonderfully delicious with rich flavor‚ muskmelons are very low in calories
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will probably be good enough‚ but if you really want to impress the judges‚ you can combine the 2! Combining the experiments Combining the experiments is easy. Before you add the baking soda to the vinegar‚ simply add some of the colored water as described in Showing your true color to the vinegar. You may need to repeat the experiment a couple of times until you are happy with the colors. I am going to leave that to you – it is all part of playing around with science until you have the right answer
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up start a stopwatch and scrub the fabric for up to 5 minutes. 6. When the marker has dissolved out of the fabric stop the time. 7. Record the time in a chart. 8. Repeat steps 3-7 with vinegar‚ Tide and Dish soap. Materials: No Name lemon fresh dishwashing liquid Co-op pure white vinegar Original Tide Water Safeway disposable coffee filter Sharpie permanent marker 4 medium size Bowls (large enough to fit the fabric and coffee filters.) Stopwatch/timer Scissors
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was that when yeast is mixed with more than sugar or items that contain a lot of sugar‚ the fermentation of the yeast is affected. The experimental results supported my hypothesis by showing that when yeast and sugar was mixed with items such as‚ vinegar and salt‚ the fermentation was affected. Table of Contents Page Statement of the problem‚ Variables‚ Hypothesis ------------------------------------------- 4 Background Research ----
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Cydney Kessler Date of Experiment: 6/9/15 Report Submitted: June 10‚ 2015 Title: Observations of Chemical and Physical Changes Purpose: the purpose of this lab experiment is that I will be able to decipher the difference between a chemical and physical change. I will be about to tell whether a chemical change has occurred during the experiment or if it was a physical change and I will be
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divided into 11 groups. Each group (2-3 students) of students will need the following: • one raw egg • vinegar (approximately 5% acetic acid) • beaker or container • paper towels (or tissues) • balance • corn syrup • distilled water (tap water will work) • graduated cylinder • tape • pen • 0.5 cm graph paper Ask each group of students to bring in one egg. It is much less expensive to purchase the vinegar and corn syrup in large volumes‚ if possible. Stores that cater to restaurants and businesses or sell
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lower concentration and isotonic solution has an equal concentration. Method: The eggs were soaked in vinegar for 48 hours. At the end of this period the eggs are dried off and mass is recorded. The eggs are then placed in distilled water. They are removed and the mass recorded. Lastly the eggs are put into corn syrup and again removed and the mass recorded. Results: The egg in the vinegar got bigger‚ as the fluid moved into the egg‚ and the fluid level went down. This is an example of a hypertonic
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