Experiment 4 - Observations of chemical change Data Table 1: Reactions Expected | | Well #/ Question | Chemicals | Reaction | | | | A | NaHCO3 – CO2 | It creates bubbles‚ it keeps uncolored | B | HCl and BTB | It changes to a strong yellow liquid | C | NH3 and BTB | It changes to blue liquid | D | HCl and blue dye | It changes green. | E | Blue dye and NaOCI | it first is blue and after add the HCl creates several colors‚ which are yellow‚ blue and green | F | NaOCl and KI
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JOSHUA HUGHES ID: 1511907 EXPERIMENT: A.2.2.3. DEMONSTRATOR: RICHARD TIA
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Organic Chemistry Laboratory – CH 200L (2012 – 2013) 2B-Ph Group 9 Experiment 10 Identifying Carboxylic Acids and Derivatives Through Classification Tests Bianca Therese Rivera‚ Camille Aliana Rivera‚ Zarah Mae Roxas‚ Ma. Rosario Teresa Saylo‚ Jean Darlene Semilla and Adrian Yu Department of Pharmacy‚ Faculty of Pharmacy University of Santo Tomas‚ Espana Street‚ Manila 1008 Date Submitted: September 13‚ 2012 ------------------------------------------------- Abstract Carboxylic acid derivatives
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Compare and contrast one laboratory and one field experiment. A laboratory experiment is where research is done in a highly controlled environment‚ where the level of control is very important. It is also to examine the validity of the hypotheses. It is an investigation where one or more variables would be changed under these controlled circumstances so that research can be done on the affects of these alterations. A field experiment is a study conducted in a naturally-occurring environment. It
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Title: Physical and Chemical Properties Purpose: The purpose of this experiment is to investigate the physical and chemical properties of pure chemical substances by subjecting them to various environmental extremes. Procedure: Filled each test tube with substances provided and subjected them to various conditions. These conditions included‚ heat‚ cold water‚ hot water‚ acid and basic additions and tested on litmus paper. The reactions were observed and documented at each step. Data tables:
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nitrate salts present in one flame test. The strontium flame admitted both a similar orange colour‚ but the strontium nitrate has a much more vibrant dark orange than the strontium chloride. Q2: Suggest reasons why the experiment tested both nitrate and chloride salts? The experiment tested both nitrate and chloride salts to allow us to compare which part of salt is responsible for the colour change of the flame. Q3: Suggest why flames on gas stove burn orange-yellow when a small amount of water
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Part I Multiple choice or short answer questions 1) (2 points) Identify a solid a. Definite volume and no definite shape b. no definite volume and no definite shape c. definite volume and definite shape 2) (2 points) A substance composed of two or more elements in a fixed‚ definite proportion is a. A solution. b. A heterogeneous mixture. c. An alloy. d. A homogeneous mixture. e. A compound. 3) (2 points) Read the water
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WEEK 2 EXPERIMENT ANSWER SHEET Please submit to the Week 2 Experiment dropbox no later than Sunday midnight. SUMMARY OF ACTIVITIES FOR WEEK 2 EXPERIMENT ASSIGNMENT Experiment 2 Exercise 1a – Effect of substrate concentration on enzyme function Experiment 2 Exercise 1b – Effect of pH on enzyme function Experiment 2 Exercise 2 – Cellular Respiration and Photosynthesis Experiment 2 Exercise 1A: Effect of substrate concentration on enzyme function Review the Week 2 Experiment Introductions‚ our online
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CHEMISTRY III : (CHEMISTRY & YOU) 1 PRETEST 1. The science that tackles the study of matter‚ its structure and the changes in composition that matter undergoes is a. Astrology c. Ecology b. Chemistry d. Physics 2. When a chemist performs an experiment‚ the quantity that is being tested is the a. control c. theory b. law d. variable 3. Juan is comparing how many kilos of rice can be contained in a sack. What process is he doing? a. counting c. measurement b. interpolation
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Information] Dear HR Resource: I am writing applying for the position of laboratory assistant in chemistry & microbiologist department as it was advertised on the your home webpage. This position really fits well with my education qualifications and career interest. The position requires extensive knowledge in the field of microbiology and chemistry as well as able to conducting analytical and microbiology tests and experiments. During my first year in ITE‚ I did this precisely this in conducting
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