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Hydrogen

ionic, covalent and hydrogen bonds

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Assignment 2 ? Chemical Bonds In this world there are many different kinds of living organisms. All organisms are composed of atoms, that bond together to make the necessary components of a living organism. There are three identified chemical bonds that are recognized, they are ionic bonds, covalent bonds and hydrogen bonds. All bonds are not created equal, just ask the electrons!

AP BIO Chapter 02

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Campbell's Biology, 9e (Reece et al.) Chapter 2 The Chemical Context of Life This chapter presents basic chemical principles for understanding the chemical context of living organisms, from atomic structure to the nature of chemical bonds and an introduction to chemical equilibrium. These questions focus on elements most important to life or the study of life, including the elements that comprise organic molecules and important trace elements. Some isotopes are important in geologic dating and in biological tracer studies. How elements participate in forming different types of chemical bonds is essential to mastering subsequent topics on the behavior and properties of biological molecules, structures, and energy metabolism. Multiple-Choice Questions

AP BIO CHP 2 CAMPBELL BIOLOGY 9e

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Campbell's Biology, 9e (Reece et al.) Chapter 2 The Chemical Context of Life This chapter presents basic chemical principles for understanding the chemical context of living organisms, from atomic structure to the nature of chemical bonds and an introduction to chemical equilibrium. These questions focus on elements most important to life or the study of life, including the elements that comprise organic molecules and important trace elements. Some isotopes are important in geologic dating and in biological tracer studies. How elements participate in forming different types of chemical bonds is essential to mastering subsequent topics on the behavior and properties of biological molecules, structures, and energy metabolism. Multiple-Choice Questions

General Chemistry Study Exam

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[Type text] [Type text] [Type text] May 14, 2014 Chemistry Study Guide Abby & Thomas Chapter 8: 8.1 Vocabulary Covalent bond- a bond formed by the sharing of electrons between atoms Molecule- a neutral group of atoms joined together by covalent bonds Diatomic molecule- a molecule that contains two atoms Example. Oxygen and Hydrogen Molecular compound- a compound composed of molecules Example. Water Molecular formula- the chemical formula of a molecular compound. A molecular formula shows how many atoms of each element a substance contains Important things to know for 8.1 8.2 Vocabulary Single Covalent bond- a bond formed when two atoms share one pair of electrons

Chapter 6

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Chemistry 1210: Introduction to General Chemistry Dr. Gina M. Florio 11 October 2012 Jespersen, Brady and Hyslop Chapter 6 Oxidation-Reduction Reactions Reactions that involve the transfer of electrons are called oxidation-reduction or redox reactions. Oxidation is the loss of electrons by a reactant. Reduction is the gain of electrons by a reactant LEO the lion goes GER! LEO: Losing Electrons during Oxidation GER: Gaining Electrons during Reduction Redox Reactions Redox Reactions In a balanced redox reaction, the total number of electrons lost by one substance is the same as the total number of electrons gained by the other. Oxidizing agent ? the substance that accepts the electrons. Reducing agent ? the substance that gives up the electrons.

Chapter 3

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Chemistry 1210: General Chemistry Dr. Gina M. Florio 06 September 2012 Lecture Notes Jespersen, Brady, Hyslop, CH 3 Elements, Compounds, and the Periodic Table Structure of the Atom Atom consists of smaller (subatomic) particles: Protons (positively charged) Neutrons (no charge) Electrons (negatively charged) Found in the atomic nucleus e ?1 0 Electrons H+ 1 1 p 1 1 , Protons and n 0 1 Neutrons Matter is typically neutral ? equal number protons and electrons per atom Size: If diameter of nucleus = 1 foot, then diameter of atom ~ 1.9 miles! Ch. 3.1 2 Chapter 1.6 Identification of Atoms Each atom has two ID numbers: 1. Atomic Number (Z) Z = Number of protons Element ? a substance whose atoms contain the same number of protons ? a substance with a unique atomic number, Z Isotope

Basic Chem Review

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Atoms: An atom has 7 protons, 7 electrons, and 8 neutrons. Fill in the blanks below for this atom: Atomic Number _______ Mass number: _______ Charge: ________ This atom belongs to which element? Notation Atomic # Mass # # protons # neutrons # electrons Types of Bonds: Determine the Type of Bond. Hydrogen and Oxygen type of bond = __________________ Carbon and Hydrogen type of bond = __________________ Sodium and Chlorine type of bond = __________________ Solutions/Molarity Practice What is the molarity if 0.5 moles of sodium chloride is dissolved to make 0.05 liters of solution? What is the molarity if 734 grams of lithium sulfate (Li2SO4) are dissolved to make 2500 mL of solution?

Basic Chemistry Review

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Atoms: An atom has 7 protons, 7 electrons, and 8 neutrons. Fill in the blanks below for this atom: Atomic Number _______ Mass number: _______ Charge: ________ This atom belongs to which element? Notation Atomic # Mass # # protons # neutrons # electrons Types of Bonds: Determine the Type of Bond. Hydrogen and Oxygen type of bond = __________________ Carbon and Hydrogen type of bond = __________________ Sodium and Chlorine type of bond = __________________ Solutions/Molarity Practice What is the molarity if 0.5 moles of sodium chloride is dissolved to make 0.05 liters of solution? What is the molarity if 734 grams of lithium sulfate (Li2SO4) are dissolved to make 2500 mL of solution?

Campbell AP Bio Study Guide Chapter 2

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Campbell's Biology, 9e (Reece et al.) Chapter 2 The Chemical Context of Life This chapter presents basic chemical principles for understanding the chemical context of living organisms, from atomic structure to the nature of chemical bonds and an introduction to chemical equilibrium. These questions focus on elements most important to life or the study of life, including the elements that comprise organic molecules and important trace elements. Some isotopes are important in geologic dating and in biological tracer studies. How elements participate in forming different types of chemical bonds is essential to mastering subsequent topics on the behavior and properties of biological molecules, structures, and energy metabolism. Multiple-Choice Questions

properties of water

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1 Name _______________________________ Date _________________ Period _________ Extraordinary properties of Water ppt Questions 1. What is the formula for a molecule of water? 2. Which atom in water attracts more negative electrons? 3. Water is a ________________ molecule because it has an equal number of ________________ and ___________________. 4. What is water?s net charge? 5. Water is called a _______________ molecule because the oxygen end ?acts? _____________ charged and the hydrogen end ?acts? _______________ charged. 6. One hydrogen bond is ____________, but many hydrogen bonds are ____________. 7. How do hydrogen bonds form? PROPERTIES OF WATER 8. At sea level, water boils at _______________ and freezes at ____________.

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