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Bases

Chapter 16 Powerpoint

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Acid-Base Equilibria Priyal Patel 0 period 16.1 Acids and Bases: A Brief Review Acids have a sour taste and cause certain dyes to change color Sour taste Linked to H+ ions Bases are bitter and feel slippery Bitter taste Feel slippery Linked to OH- ions When acids and bases are mixed in certain proportions, their characteristics disappear altogether 16.2 Bronsted-Lowry Acids and Bases Danish Chemist Johannes Bronsted and English chemist Thomas Lowry proposed a definition of acids and bases Based on the fact that acid-base reactions involve the transfer of H+ ions from one substance to another. The H+ Ion in Water An H+ is a proton with no surrounding valence electrons This proton bonds interacts with nonbonding electrons of water molecules to form hydrated hydrogen ions.

Campbell Biology Chapter 3 outline

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CHAPTER 3 ? WATER AND LIFE THE MOLECUES THAT SUPPORT ALL OF LIFE Water is the only natural substance to exist in all 3 states of matter: Solid Liquid Gas WATER molecule is a polar molecule It has a positive and a negative end It can make up to 4 Hydrogen bonds that break and reform instantaneously. 4 Emergent properties of water COHESION The linking together of like molecules, often by hydrogen bonds. Water sticks to itself Adhesion- water sticks to something else Surface Tension ? A measure of how difficult it is to stretch or break the surface of a liquid. Water has a high surface tension because of the hydrogen bonding of surface molecules MODERATION OF TEMPERATURE BY WATER HEAT AND TEMPERATURE Kinetic Energy ?

Unit 4 Study List: Aqueous Solutions

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AP Chemistry Unit Four: Aqueous Solutions S T U D Y L I S T Properties of Aqueous Solutions ?? Define solute, solvent, and solution. Give examples. ?? Define electrolytes. Give operational and theoretical definitions of electrolytes. ?? Know that soluble ionic compounds and strong acids are strong electrolytes. Ionic compounds of low solubility [e.g. Mg(OH) 2 ] and weak acids/bases are weak electrolytes. ?? Know that molecular compounds (except acids) are non-electrolytes. ?? Know that alcohols (e.g. CH 3 OH )are not ionic hydroxides. Bases are usually metallic hydroxides. ?? Know the solubility rules. State whether an ionic compound is soluble in water. Precipitation Reactions ?? Know that ppt reactions are double

biology chapter guide

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Campbell's Biology, 9e (Reece et al.) Chapter 3 Water and Life Life evolved in the ocean, and the chemistry of life occurs in an aqueous environment. These questions explore the properties of water that are important to sustain life?s chemical processes, organismal physiology, and interactions of organisms with their environment. Quantitative properties such as heat content, molarity, and pH are also addressed. A few questions address how human activities affect the global environment through acid rain and acidification of the ocean. Multiple-Choice Questions 1) In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by A) hydrogen bonds. B) nonpolar covalent bonds. C) polar covalent bonds. D) ionic bonds. E) van der Waals interactions.

Decomposition of Sodium Bicarbonate Lab

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Name_________________ Lab Group_______________________ Period__________________ Date___________________________ Lab Design Template Title Give your lab a title that describes the problem you are solving Decompos ition of Sodium Bicarbonate Lab Independent Variable Temperature Heat Dependent Variable Chemical reaction Control Group Sodium Bicarbonate Heat Amount of sodium bicarbonate Constants Purpose: (Write in your own words. Explain the reasons why you are doing the lab. May be written as a hypothesis)
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