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Acid

Testing for Polysaccharides Lab Intro

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Introduction Carbohydrates, proteins, lipids and nucleic acids are four abundant molecules crucial to all living organisms. Each of these molecules are characterized differently and can be easily distinguished through testing with chemicals. Three of them (carbohydrates, proteins and nucleic acids) are macromolecules, molecules that consist of many atoms. However, they do share the possession of the six elements essential to life which are sulfur, phosphorus , oxygen, nitrogen, carbon and hydrogen. The objective is to test molecules like carbohydrates, lipids and proteins to determine how they react with chemicals.

AP Chemistry Zumdahl 7E Chapter 14 Notes

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1 Chapter 14 - Acids and Bases 14.1 The Nature of Acids and Bases A. Arrhenius Model 1. Acids produce hydrogen ions in aqueous solutions 2. Bases produce hydroxide ions in aqueous solutions B. Bronsted-Lowry Model 1. Acids are proton donors 2. Bases are proton acceptors 3. H3O+ is called the hydronium ion C. Conjugate Acid-Base Pairs 1. A conjugate base is what remains after an acid has donated a proton a. Cl- is the conjugate base of HCl 2. A conjugate acid is what is formed when a base accepts a proton base acid acid base 3. HCl is a stronger base than H3O+ (H+) so the equilibrium lies far to the right D. Acid Dissociation Constant 1. ][ ]][[ HCl ClHKa -+ = a. water is not included because, in dilute solution, the concentration of

inorganic chemistry lab report : titration

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1 Experiment 6: Acid-Base Titration Objective: The objective of this experiment is to determine the percent mass of Acetic Acid in the vinegar (original Acetic Acid) by reacting measured volume of NaOH solution, whose concentration is given by react with standard HCl solution, with measured volume of dilute Acetic Acid solution. In addition, Excel is used in calculation part. Method:

inorganic chemistry lab report: titration

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1 Experiment 6: Acid-Base Titration Objective: The objective of this experiment is to determine the percent mass of Acetic Acid in the vinegar (original Acetic Acid) by reacting measured volume of NaOH solution, whose concentration is given by react with standard HCl solution, with measured volume of dilute Acetic Acid solution. In addition, Excel is used in calculation part. Method:

Chemistry

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Grace Doran 10/28/15 Grade 9 Liver Catalase Lab Purpose: The experiment was conducted in order to test whether or not the liver catalase performed different when denatured. Also to test what happens when we change the pH of the reaction. Introduction/ Background Information: A liver is vital in getting rid of toxic substances in the body. It uses enzymes which are proteins that help to complete chemical reactions. The enzyme used in the liver is a catalase enzyme. This enzyme helps to break down hydrogen peroxide (H2O2) into water and oxygen. However enzymes may under extreme heat or pH levels may become denatured and nonfunctional.

Campell9EdChapter3WaterandLife

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Water and Life Chapter 3 Overview: The Molecule That Supports All of Life Water is the biological medium on Earth All living organisms require water more than any other substance Most cells are surrounded by water, and cells themselves are about 70?95% water The abundance of water is the main reason the Earth is habitable ? 2011 Pearson Education, Inc. Figure 3.1 Polar covalent bonds in water molecules result in hydrogen bonding The water molecule is a polar molecule: the opposite ends have opposite charges Polarity allows water molecules to form hydrogen bonds with each other ? 2011 Pearson Education, Inc. Figure 3.2 Hydrogen bond Polar covalent bonds ? ? ? + ? + ? ? ? ? ? + ? + ? ? Four emergent properties of water contribute to Earth?s suitability for life

AP Bio Chp 3

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AP Biology Reading Guide Chapter 3: Water and the Fitness of the Environment Fred and Theresa Holtzclaw Copyright ? 2010 Pearson Education, Inc. - 1 - Name_______________________Period___________ Chapter 3: Water and the Fitness of the Environment Concept 3.1 The polarity of water molecules results in hydrogen bonding 1. Study the water molecules at the right. On the central molecule, label oxygen (O) and hydrogen (H). 2. What is a polar molecule? Why is water considered polar? 3. Now, add + and ? signs to indicate the charged regions of each molecule. Then, indicate the hydrogen bonds. 4. Explain hydrogen bonding. How many hydrogen bonds can a single water molecule form?

quiz 3

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Which of these functional groups does not contain oxygen? a. carboxyl b. phosphate c. sulfhydryl d. hydroxyl e. carbonyl What is the definition of an isomer? a. active and inactive versions of a molecule b. molecules made up of the same elements c. molecules with different structures but similar functions d. molecules with the same molecular formula but different structures e. molecules with the same structure but different molecular formulas

2.2 Western High Biology H vocab

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?Opposite charges of polar molecules can interact to form hydrogen bonds. ?Often oxygen or nitrogen, but many other molecules. ?Weaker than covalent bonds but strong among water molecules 2.2 Vocabulary Isabella Hardman Period 7 9/2/14 ?Measures acidity ? U sually between 0 and 14 ? - 0 is very acidic (High H+) and 14 is in very basic (low H+) ?pH of 7 is neutral -Must be tightly controlled in organisms with buffers.-
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