The key is giving them lots of time (about 7 days) to grow. As the water (the solvent) evaporates, sugar crystals form on the string or stick, and the shapes that they form reflect the shape of individual sugar crystals. By gently suspending the prepared string into the solution and let sit at room temperature, undisturbed, and be aware of the solution's solubility for several days allows us to control its rate of growth.…
6) Rank the following in order of increasing strength of intermolecular forces in the pure substances. Which substance exists as a gas at 25 ®C and 1 atm?…
(D) 13. All have similar physical properties but different chemical compositions. All have the same chemical composition but different physical properties.…
74. c) Select one example of a chemical change from your table, and explain why it is a chemical change.…
1. xxWhich one of the following is a "substance" in the sense of the word as used in your textbook?…
2.Classify the reaction that occurred between the iron and oxygen. Apply this reaction to a…
2. For each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table.…
This solution contains a high concentration of sugars, to the degree of no longer being translucent, but…
A theory is a set of systematically interrelated concepts, definitions, and propositions that are advanced to explain and predict facts. In this sense, we have many theories and use them continually to explain or predict what goes on around us. To the degree that our theories are sound and fit the situation, we are successful in our explanations and predictions.…
1. Theories are organized explanations and predictions concerning phenomena of interest and provide frameworks for understanding the relationship across variables.…
12. Give an example or two of the food item(s) that represents each macromolecule category?…
1. Temperature: Put some hot water, warm water, and cold water in three bowls. Just use water from your faucet, and please be sure that the hot water is not too hot to touch! Place a finger in the hot water and a finger of the other hand in the cold water. After a few seconds, place them both in the warm water. Describe the sensations. Can you trust your senses for measuring temperature? Explain your answer.…
7. When a candle burns, the most prevalent products are: D) Carbon dioxide and water.…
For finding the area of a segment you need to know the length of the chord, the radius and…
s/o Mr. Amar Singh is a bonafide student of class XIIth Science during session 2012-2013. He has completed his project on…