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nswer the following pre lab questions. The information needed to answer question 1 is in the material section

nswer the following pre lab questions. The information needed to answer question 1 is in the material section

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Answer the following pre lab questions. The information needed to answer question 1 is in the material section
Pre-Lab Questions 1. Which reactants used in this experiment are flammable? Discuss the safety precautions that are necessary when working with flammable materials in the lab. 2. Summarize the following description of a chemical reaction in the form of a balanced chemical equation. "When solid sodium bicarbonate is heated in a test tube, an invisible gas, carbon dioxide, is released into the surrounding air. Water condenses at the mouth of the test tube and a white solid residue, sodium carbonate, remains behind in the bottom of the test tube." 3. Common observations of a chemical reaction are described in the Introduction section. For each observation, name a common or everyday occurrence that must involve a chem- ical reaction. Example: When a candle burns, it gives off light and heat. The production of light and heat is evidence for a chemical reaction. Materials Ammonium carbonate, (NH,),CO, 0.5 g Calcium carbonate, CaCO3, 0.5 g Copper(11) chioride solution, CuCl,, 0.5 M, 4 mL Ethyl alcohol, C,H,0H, 1 ml. Hydrochloric acid, HCI, 1 M, 4 mL Magnesium ribbon, Mg, 2–4 cm strips, 2 Phenolphthalein indicator, 1 drop Butane safety lighter Evaporating dish, porcelain Forceps or crucible tongs Heat-resistant pad Litmus paper Pipets, Beral-type, 6 Spatula Test tubes, small, 6 Sodium hydroxide solution, NaOH, 1 M, 1 mL Sodium phosphate solution, Na,PO, 0.5 M, 1 mL Water, distilled Zinc, mossy, or zinc shot, Zn, 1–2 pieces Bunsen or laboratory burner Test tube clamp Test tube rack Wash bottle Wood splints, 3
Transcribed Image Text:Pre-Lab Questions 1. Which reactants used in this experiment are flammable? Discuss the safety precautions that are necessary when working with flammable materials in the lab. 2. Summarize the following description of a chemical reaction in the form of a balanced chemical equation. "When solid sodium bicarbonate is heated in a test tube, an invisible gas, carbon dioxide, is released into the surrounding air. Water condenses at the mouth of the test tube and a white solid residue, sodium carbonate, remains behind in the bottom of the test tube." 3. Common observations of a chemical reaction are described in the Introduction section. For each observation, name a common or everyday occurrence that must involve a chem- ical reaction. Example: When a candle burns, it gives off light and heat. The production of light and heat is evidence for a chemical reaction. Materials Ammonium carbonate, (NH,),CO, 0.5 g Calcium carbonate, CaCO3, 0.5 g Copper(11) chioride solution, CuCl,, 0.5 M, 4 mL Ethyl alcohol, C,H,0H, 1 ml. Hydrochloric acid, HCI, 1 M, 4 mL Magnesium ribbon, Mg, 2–4 cm strips, 2 Phenolphthalein indicator, 1 drop Butane safety lighter Evaporating dish, porcelain Forceps or crucible tongs Heat-resistant pad Litmus paper Pipets, Beral-type, 6 Spatula Test tubes, small, 6 Sodium hydroxide solution, NaOH, 1 M, 1 mL Sodium phosphate solution, Na,PO, 0.5 M, 1 mL Water, distilled Zinc, mossy, or zinc shot, Zn, 1–2 pieces Bunsen or laboratory burner Test tube clamp Test tube rack Wash bottle Wood splints, 3
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