Marissa Ware Partner(s): None Chem 253—TA: Josh Lovell Lab 1: Effect of pH on a Food Preservative 6/11/13 Purpose: (1 point) To determine whether a chemical change occurs when Sodium Benzoate is acidified to Benzoic Acid. Theory: (2 points) Sodium Benzoate is a common food preservative found in jellies‚ jams‚ sodas‚ fruit juices‚ etc... Its acid‚ Benzoic Acid‚ is an organic preservative that stops the growth of bacteria‚ yeasts‚ and molds. Reaction: (3 points) Reaction: sodium
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Part 2: Effects of Environment on Mitosis. Experimental Hypothesis: If we put onion root tips in IAA solution then the rate of Mitosis will increase. Null Hypothesis: There will be no difference Part 1- Post Lab Question If a cell contains a set of duplicated chromosomes‚ does it contain any more genetic information than the cell before the chromosomes were duplicated? No‚ because if it is duplicated‚ it would have the same number of chromosomes unless there was a
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Name: Date: Graded Assignment Lab Report Answer the questions below. When you have finished‚ submit this assignment to your teacher by the due date for full credit. (5 points) Score 1. Which combinations of substances resulted in a chemical change? Answer: The potassium nitrate and the ammounuiam hydroxide had a chemical change. It started bubbling and getting really foggy. The calcium nitrate and ammonuiam hydroxide did nothing. It’s all clear still‚ but no chemical change. The copper nitrate
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THE TUBBATAHA REEF The name ’Tubbataha’ is a Samal word for "long reef exposed at low tide". Samals are seafaring people of the Sulu Sea. Cagayanen people who are more geographically associated with Tubbataha Reefs referred the Park as ’gusong’. Location Tubbataha Reefs Natural Park (TRNP) lies in the middle of the Sulu Sea and falls under the political jurisdiction of Cagayancillo‚ an island municipality situated 130km to the north. The park is around 150km southeast of Puerto Princesa City -
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Name: _____________________ Date: _____________ Student Exploration: pH Analysis Vocabulary: acid‚ acidic‚ alkaline‚ base‚ indicator‚ neutral‚ pH Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Acids are substances that produce hydrogen ions (H+) when dissolved in water. Lemon juice is an example of an acid. A. What does lemon juice taste like? __Sour.______________________________ B. What does it feel like if lemon juice gets in your eye? ___It
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Lab #6: pH Effects and Enzyme Concentration on Catecholase Activity Abstract: This experiment examined the effect on how the changes in pH balance of potato juice affected the enzyme activity‚ structural stability and solubility. Introduction: Enzymes are macromolecules that allow chemical reactions to occur. They function as biological catalysts. A catalyst is a substance that is involved in‚ but not changed by or consumed in‚ a chemical reaction. The amount of energy required for a reaction
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The effects of pH on mung beans Gloria Cheng Winsy Cheung Lily Wong Christine Yen January 15‚ 1998 Abstract This experiment explores how different pH environments affect the growth of mung beans. The mung beans were grown in water with various pH levels‚ consisted of pH levels 5‚ 6‚ 7‚ 8‚ and 9. A replicated design was used consisting of 3 runs for each pH level. The following results are listed in order of pH levels allowing most growth to least growth of the mung beans: 7‚ 8‚ 6‚ 5‚ and 9. These
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only as an annex named‚ Marikina High School Annex. By the year 1993‚ Mrs. Lagrimas B. Garcia‚ the school principal‚ made extra effort on achieving full independence of the Marikina High School Annex to give birth to the school‚ Parang High School (PHS). PHS had been through a lot of changes since the School Year 1996-1997. Hon. Congressman Romeo DC Candazo‚ Hon. Bayani BH Fernando and Dr. Perla B. Menguito made a big impact on the transformation of the school’s image and into a conductive learning environment
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Collaborate ?? ADVANCED ALGEBRA WITH FINANCIAL APPLICATIONS LIVE LESSON ROOM Jun 26‚ 2013 10:47:35 AM Public Page Page 1. Blackboard Collaborate ?? ADVANCED ALGEBRA WITH FINANCIAL APPLICATIONS LIVE LESSON ROOM Jun 26‚ 2013 10:47:35 AM Spending 03 Income Tax Page 2. Blackboard Collaborate ?? ADVANCED ALGEBRA WITH FINANCIAL APPLICATIONS LIVE LESSON ROOM Jun 26‚ 2013 10:47:35 AM Income Tax Page 3. Blackboard Collaborate ?? ADVANCED ALGEBRA WITH FINANCIAL APPLICATIONS LIVE LESSON ROOM
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Assignment 03 eth305v Give a definition of the concept learning style. (2) Learning style is that consistent pattern of behaviour in which a learnerapproaches and masters learning content‚ discover his or her world andforms concepts. It is formed in the deep structure of neural organisationand personality which moulds and is moulded by human development and the cultural experiences of home‚ school and society. Give a definition of the concept teaching style. (2) Teaching style refers
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