Name: Marisa Malazzo Date: 7/17/14 Exp 1: Observations of Chemical Changes Lab Section: 76426 Data Tables: Part 1: Chemicals Well No. Observations of the Reaction A. NaHCO3 + HCl no color change‚ some small bubbles formed B. HCl + BTB changed a yellowish orange color‚ no bubbles or precipitation C. NH3 + BTB changed a blue color D. HCl + blue dye changed a green color E. Blue dye + NaOCl no chemical change‚ only blue color appeared with the 1 drop of HCl
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. Household conversion with answers Fall 2014 1. 15 tsp = _____ Tbsp a. 1/5 b. 3 c. 5 d. 7.5 Answer: c 2. 6 Tbsp = _____ tsp a. 2 b. 24 c. 12 d. 18 Answer: d 3. 4 fluid oz = _____ Tbsp a. 8 b. 2 c. 12 d. 16 Answer: a 4. 2 cups = _____ fluid oz a. 12 b. 24 c. 32 d. 16 Answer: d 5. 6 tsp = _____ Tbsp a. 1 b. 1/2 c. 3 d. 2 Answer: d 6. 7 Tbsp = _____ tsp a. 21 b. 14 c. 2 1/3 d. 3 ½ Answer: a 7. 12 tsp = _____ Tbsp a. 6 b. 4 c. 3 d. 2 Answer: b 8. Calculate the fluid intake in
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2013 Title: Observations of Chemical Changes Purpose: To observe some properties of chemical reactions and to associate chemical properties with household products. Procedure: In this experiment I used a 96-well plate to hold each of the chemical reactions that occurred during this lab. Using a pipet‚ I added two drops of one chemical with two drops of another chemical and observed the effects of each reaction. Data Table 1: Experimental Data Well # | Chemicals | Observations | |
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Data Tables: Part 1: |Chemicals|Well No.|Observations of the Reaction| A.|NaHCO3 + HCl||Bubbling in center of droplets. Homogeneous| B.|HCl + BTB||Turns yellow immediately after contact. Homogeneous| C.|NH3 + BTB||Turned dark blue. Homogeneous| D.|HCl + blue dye||Solution turns green immediately after contact. Homogeneous| E.|Blue dye + NaOCl||Stays blue. Homogeneous| | with the 1 drop of HCl||Mixes and turns a bluish green color. Homogeneous| F.|NaOCl + KI||Slightly yellowish tint to the
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II PUC – CHEMISTRY (34) MODEL QUESTION PAPER - 1 Time: 3hours 15 minutes Maximum marks: 70 Instructions: 1. The question paper has four parts: A‚ B‚ C and D. All parts are compulsory. 2. Write balanced chemical equations and draw labeled diagrams wherever required. 3. Use log tables and the simple calculator if necessary. (Use of scientific calculators is not allowed) PART-A I. Answer ALL of the following. (Each question carries 1 mark) 10x1=10 (Answer each question in one word or
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Sophomore English [EX] Second Semester 2010-2011 Mr. Sanders Instructions: During each five-day week‚ you’ll have daily grammar practice. We work on only one sentence per week. The sentences are of varying degrees of difficulty. On each Monday‚ you’ll identify parts of speech including noun (type)‚ pronoun (type‚ case‚ person)‚ verb (type and tense)‚ adverb‚ adjective‚ article‚ preposition‚ conjunction (type)‚ interjection‚ infinitive‚ gerund‚ participle. On each Tuesday‚ you’ll identify
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Data Tables: Part 1: Chemicals Well No. Observations of the Reaction A. NaHCO3 + HCl 1A Bubbles appeared for 5 seconds. Now clear in color‚ no bubbles B. HCl + BTB 2A Turned from clear to yellow C. NH3 + BTB 3A Turned from clear to dark blue D. HCl + blue dye 4A Turned from clear to green E. Blue dye + NaOCl 5A Turned from blue to light blue with the 1 drop of HCl 6A Turned from blue->light blue->yellow->light yellow->clear‚ transparent F. NaOCl + KI 7A Turned from clear to Light yellow
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Chemical equations are the symbolic representations of chemical reactions that are made up of reactants and products. It is made up of the chemical formulas of the reactants and the chemical formula of the products. The reactants are the substances or chemicals that takes part in during a reaction and the products are the chemicals are the substances that result from the chemical reaction. Reactants are on the left side of the chemical equation and the products are on the right side of the chemical
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Observations of Chemical Changes Experiment 1 Chemistry 111 September 3‚2014 Ashley Mattox Abstract: The purposes of this lab is to observe the reactions of some common chemicals contained in consumer products and observe the macroscopic changes these chemicals undergo. Purpose: The purpose of the lab is to be able to interpret underlying macroscopic changes in terms of the behavior of atoms and molecules and also to learn how to separate mixtures into their component
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Daily Life There are a variety of common courtesies that Americans should observe when in Mexico. Some of the important issues of cultural etiquette are described herein. When in Mexico Americans should refrain from calling themselves "Americans." Mexicans consider themselves Americans too since the whole continent is called America. Another part of Mexican culture that may be shocking to American’s traveling there is the way machismo is verbalized by male members of Mexican society. Making sexual
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