a. Is the substance soluble in water?
b. If soluble in water, is the solution capable of conducting a current?
c. Does the substance react with an acid to produce a gas?
d. If soluble in water, what is the approximate pH of the solution?
e. If soluble in water, does the substance dissolve endothermically or exothermically?
f. Using a hand lens, what is the shape of the individual particles or are they too small to see?
scienceawe wrote:Hi guys. I am a 6th grader and am doing Science Olympiad for the first time. I am wondering what some good tests for CJAP might be. I already know about all the standards (powder grain, luster, color, crystals or grains, qualities of crystals, general powder appearance, density, solubility, miscibility, hygroscopic or not, endothermic or exothermic reaction with water, ph or conductivity changes). I am also familiar with ionic or covalent compounds, but I am having difficulty in finding how to identify them with NaOH or HCI (I have been unable to find either's purpose, but know that I am looking for organic or inorganic testing and ionic or covalent testing, however I do know some other ways of identifying the latter by observing properties of the substance, such as solubility and conductivity.) I am also trying to find out about the use of Benidict's solution. Sorry for all the questions, but for chem tests, Google is almost useless. Thanks!
Cyrus_D wrote:2win wrote:Here's a question: How are you supposed to find the mass of something without a balance?
Its almost impossible.
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