Physical and Chemical Change Objective: Recognize and distinguish between chemical and physical changes. Materials: - lab balance - microspatula - lab burner - dropper pipet - 5 test tubes - mortar and pestle - test tube rack - magnet - test tube holder - insulating pad - watch glass - safety goggles - glass square - lab apron or coat - copper sulfate pentahydrate - iron fillings - sodium chloride - magnesium ribbon - hydrochloric acid - paper
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Bubble Inside a Bubble Materials • • • • • • • • Granulated sugar (we had our best results using Imperial Sugar and Dixie Crystals) Dish soap Water Tablespoon Scissors Pipette Cup Adult supervision Bubbles form because of a combination of water’s hydrogen bonds and the oily film you can see shimmer in the light. The oily film you see is actually two separate layers of soap attached to‚ and surrounding‚ hydrogen-bonded water. Solar Oven S’mores Materials • Pizza box • Two clear sheet protectors
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CHEMISTRY 110 GENERAL CHEMISTRY I INFORMATION SHEET Fall 2011 Instructors: Professor Ashok Kakkar Otto Maass Chemistry Building‚ room 313 Tel: (514) 398-6912 Office hours: By appointment‚ e-mail via WebCT to arrange meetings. E-mail: use webCT Professor Scott Bohle Otto Maass Chemistry Building‚ room 233A Tel: (514) 398-7409 Office hours: By appointment‚ e-mail via WebCT to arrange meetings E-mail: use webCT Professor Bryan Sanctuary Otto Maass Chemistry Building‚ room 224 Tel: (514) 398-6930
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LibraryPirate LibraryPirate Metric Prefixes Multiple 1‚000‚000‚000‚000‚000‚000 1‚000‚000‚000‚000‚000 1‚000‚000‚000‚000 1‚000‚000‚000 1‚000‚000 1‚000 100 10 1 0.1 0.01 0.001 0.000001 0.000000001 0.000000000001 0.000000000000001 0.000000000000000001 1018 1015 1012 109 106 103 102 101 1 10–1 10–2 10–3 10–6 10–9 10–12 10–15 10–18 Name exa peta tera giga mega kilo hecto deka — deci centi milli micro nano pico femto atto Abbreviation E P T G M k h da — d c m m n p f a Physical Constants Acceleration
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Journal of Bangladesh Academy of Sciences‚ Vol. 35‚ No. 2‚ 203-210‚ 2011 CRYSTALLIZATION OF ZINC SULPHATE SINGLE CRYSTALS AND ITS STRUCTURAL‚ THERMAL AND OPTICAL CHARACTERIZATION J.K. SAHA AND J. PODDER* Department of Physics‚ Bangladesh University of Engineering and Technology‚ Dhaka-1000‚ Bangladesh ABSTRACT Zinc sulphate (ZnSO4.7H 2O)‚ an inorganic material has been crystallized by an isothermal evaporation method. ZnSO 4.7H2O is highly soluble in water and the solubility is found to be increased
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CJ Tavner 2/04/2013 Chemistry Lab: Equilibrium and LeChatelier’s Princinple Objective: Put stresses on the systems; observe how the equilibrium’s systems react to a stress. Materials and Procedures: A. Materials 1. NaCl(s) 2. KSCN‚ 0.002M 3. Bromythymol blue indicator solution 4. AgNO3‚ 0.1 5. CoCL2 x 6H2O(s) 6. HCl‚ 12M 7. HCL‚ 0.1M 8. NaOH‚ 0.1M 9. Fe(NO3)3‚ 0.2M 10. C2H5OH(l) 11. Na2HPO4(s) 12.
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congress ratified and passed the 19th amendment‚ which guarantees all women the right to vote. In Crystal Eastman’s essay “Now we can begin” she gives her view of feminism during this time period and how it was viewed as negative since all the feminist leaders at the time was associated with socialism or communism. This negative social view prevented progressive movement in feminism. In “Now we can Begin” Crystal Eastman effectively uses examples on how the women’s right to vote in the 1920s would lead
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It is imperative that women have the same freedoms as men. Women are people just like men and should have the same rights‚ equality among sexes. The article by Crystal Eastman “Now We Can Begin” is a successful argument for women’s rights. Freedom should be a right everyone possesses‚ without any exceptions equality is equality. Education should not be limited to only men‚ women who have been teaching for years because of a few different reasons should have the same opportunities. Women have an unequal
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Constituent of “Panacetin” Recrystallization& Melting-Point Measurement Organic Chemistry Lab Introduction: Panacetin purportedly includes sucrose‚ aspirin‚ and acetaminophen. However‚ the accuracy of Panacetin’s contents has been called into question by the Association for Safe Pharmaceuticals. Therefore‚ the lab must discover the accuracy of the ingredients listed on Panacetin’s label. The unknown in this experiment is presumed to be something
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PRACTICAL 1 POST-LAB QUESTIONS Part 1 4. Line of best fit‚ it decreases twists that a/some deviant point(s) could bring about due to the errors that may have happened during the experimental process. This is better than connecting all the data points and assuming all the points collected from the experiment are totally accurate as there are still chances for the experimental errors to happen throughout the experiment process. 5. Yes‚ if the absorbance of the sample appeared to be outside the linear
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