Chapter 6 Chemical Reactions and Quantities The Mole General‚ Organic‚ and Biological Chemistry Copyright © 2010 Pearson Education‚ Inc. 1 Collection Terms A collection term states a specific number of items. 1 dozen donuts = 12 donuts 1 ream of paper = 500 sheets 1 case = 24 cans General‚ Organic‚ and Biological Chemistry 2 A Mole of Atoms A mole is a collection that contains the same number of particles as there are carbon atoms in 12.0 g of carbon 12C 6.02 x 1023 atoms of
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CHAPTER # 1 Q.DEFINE CHEMISTRY. A. Chemistry‚ a branch of physical science‚ is the study of the composition‚ properties and behavior of matter. Chemistry is concerned with atoms and their interactions with other atoms‚ and particularly with the properties of chemical bonds. Chemistry is also concerned with the interactions between atoms and various forms of energy Q.DEFINE THE BRANCHES OF CHEMISTRY. * Physical chemistry is the study of macroscopic‚ atomic‚ subatomic‚ and particulate phenomena
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AP Biology Sunday‚ October 24‚ 2010 Enzyme Lab Write-Up Purpose: To observe how an enzyme affect the speed of chemical reaction. To describe how the concentration of an enzyme affects its ability to work. Hypothesis: Depending on the concentration of the catalase which the disk is soaked in‚ it will have a direct correlation on the rate of hydrogen peroxide being broken down into oxygen gas. Prediction: Since the rate of reaction can be lowered by the addition of
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Flame test: AIM: To determine which part of the salt is responsible for the characteristics in the flame. HYPOTHESIS: If we introduce a metal salt in the blue flame of the Bunsen burner‚ then the colour given off by the flame is due to the metal part of the salt. METHOD: (1) With a heat proof mat under the Bunsen burner‚ turn the gas on and light up the Bunsen burner with matches. (2) Pour enough Hydrochloric acid into a beaker. (3) Using your wire‚ dip it into the beaker containing Hydrochloric
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Introduction: The purpose behind (the first step in) this experiment is to show that similarly to week 1‚ the molarity of an acid or base in solution can be determined (so long as one value’s is known) using titration. In this case though‚ finding the molarity of the acid used in the reaction is then used to determine the percent of that acid in a vinegar solution and compared to the standard value for % acid present in vinegar. The second part of the experiment was to see if by titrating a solution
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FDA Vinegar / Acetic Acid Analysis Objective- Determine the Acetic acid level contained within the vinegar sample Background- Per the FDA regulation which states that consumer vinegar may contain no less than four percent and no more than five percent Acetic Acid‚ we will determine the Acetic Acid content of a sample of the vinegar in question through titration. After standardization of our titrant‚ which in this case will be NaOH‚ we will use this along with the indicator Phenolphthalein
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Chemistry (the etymology of the word has been much disputed)[1] is the science of matter and the changes it undergoes. The science of matter is also addressed by physics‚ but while physics takes a more general and fundamental approach‚ chemistry is more specialized‚ being concerned with the composition‚ behavior (or reaction)‚ structure‚ and properties of matter‚ as well as the changes it undergoes during chemical reactions.[2] It is a physical science which studies various substances‚ atoms‚ molecules
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NAME OF COURSE COURSE CODE CREDIT TOTAL STUDENT LEARNING HOURS PREREQUISITE LEARNING OUTCOME : : : : Organic Chemistry I CHM 3201 4 (3+1) 160 hours per semester : : None At the end of the course‚ students will be able to: 1. Define and explain the basic concepts in organic chemistry such as electronegativity‚ orbital hybridization‚ nomenclature‚ resonance and isomerism‚ as well as organic reactions mechanisms (C4‚ CTPS) 2. to conduct experiments that demonstrate the characteristic reactions
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psychology students at Essex with the basic information for structuring and formatting reports of research in psychology. During your time here this will be an invaluable reference. You are encouraged to refer to this document each time you write a lab report. The writing of laboratory reports is an essential part of any practical module in Psychology. This is because psychologists (and more generally most scientists) write accounts of their studies using a standard format‚ which makes explicit
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Importance of chemistry : 1. Chemistry can improve the conditions of human life and even save lives. 2. Provides deeper knowledge. 3. * Plastics that are as strong as metals but light weight. * Personal care and household products * Polymers or various sizes and shapes * Metal alloys * Drugs from various ailment CONTRIBUTION OF CHEMISTRY : 1. Food and agriculture 2. energy production 3 . environment preservation 4 . education 5 . clothing 6. colors and
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