'Common substances' diaporamas de présentation

The Chemistry of Acids and Bases

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Calorimetry

Unit 5 Matter Undergo Changes. Calorimetry. D (PE). (Products). System. Surroundings. Burning of a Match. (Reactants). Potential energy. Energy released to the surrounding as heat. Zumdahl, Zumdahl, DeCoste, World of Chemistry 2002, page 293. Endothermic Reaction

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Health Disorders

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Chemical Thermodynamics

Chemical Thermodynamics. BLB 11 th Chapter 19. Chemical Reactions. How fast will the reaction occur? Ch. 14 How far toward completion will the reaction proceed? Ch. 15 Will the reaction occur, i.e. is it spontaneous? Ch. 5, 19. energy heat work pathway state function system

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The earth, ca. 1800

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Lecture #7 - (a) The Mole Concept, (b) Formula of an Unknown

Lecture #7 - (a) The Mole Concept, (b) Formula of an Unknown. Chemistry 142 B James B. Callis, Instructor Autumn Quarter, 2004. Figure 3.1: Mass spectrometer . Figure 3.2 (a): Peaks of neon injected. Figure 3.2 (b): Bar graph of neon injected. Problem 7-1: Isotopic Composition.

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The Mole I

The Mole I. Mathematical Relationships with Chemical Formulas. The Mole. mole (mol) - the amount of a substance that contains the same number of entities as there are atoms in exactly 12 g of carbon-12.

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The Effect of Caffeine on Neurological Dopamine Production

The Effect of Caffeine on Neurological Dopamine Production. Process Dynamics & Control October 13 th , 2004 Student Name 1 Student Name 2. Presentation Outline. Introduction Simulation Assumptions Process Outcomes Laplace via Maple Matlab Simulink Conclusion. What is Caffeine?.

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Chapter 35 - Refraction

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Chapter 11

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Hold up! First we need to review!

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Chapter 11

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Acids & Bases

Acids & Bases. pH. H 2 O + H 2 O H 3 O + + OH -. Ionization of Water. K w = [H 3 O + ][OH - ] = 1.0 ? 10 -14. Kw=ionization constant for H2O. Acidic or Basic. [H 3 O + ][OH - ] = 1.0 ? 10 -14 ACIDIC [H+] is greater than [OH-] [H+] is greater than 1.0 ? 10 -7 BASIC

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Electricity

Electricity. 9.2 The Electrical Nature of Matter. Electricity web What do you know about electricity? What do you want to know? How will you find out? What is electricity? (handout) Electrons pass from atom to atom creating an electrical current from one end to the other. Balloon demo.

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II. pH

Ch. 14 & 15 - Acids & Bases. II. pH. H 2 O + H 2 O H 3 O + + OH -. A. Ionization of Water. K w = [H 3 O + ][OH - ] = 1.0 ? 10 -14. A. Ionization of Water. Find the hydroxide ion concentration of 3.0 ? 10 -2 M HCl. [H 3 O + ][OH - ] = 1.0 ? 10 -14

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pH of Common Substances

pH of Common Substances. Timberlake, Chemistry 7 th Edition, page 335. Calculating pH. pH = -log [H + ] So if [H + ] = 1x10 -5 pH = - log ( 1x10 -5 ) = 5 Calculate the pH if [H + ] = 1 x 10 -2 M pH = [H + ] = 3.0 x 10 -6 M pH = [H + ] = 8.2 x 10 -6 M pH =.

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Density

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Renewable Resources Algea & hydrogen.

By Jacob Gallegos. Renewable Resources Algea & hydrogen. Renewable sources!. Hydrogen is high in energy, an engine that burns pure hydrogen produces almost no pollution.

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