Chapter 3 Stoichiometry

Chapter 3 Stoichiometry - CHEMISTRY The Central Science 9th...

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Chapter 3 Chapter 3 Stoichiometry: Calculations with Chemical Stoichiometry: Calculations with Chemical Formulas and Equations Formulas and Equations CHEMISTRY The Central Science 9th Edition
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Chemical properties describes the reaction a substance undergo to form new substances. The study of chemical changes is at the heart of chemistry. Some chemical changes or simple and some or complex. For example, changes that occur in your brain and eyes allow you to see and think. In this chapter, chemical changes will be used to explore the quantity of substances consumed and produced in a chemical reaction. Chemical Equations are used to describe chemical reactions. Chemical Changes Chemical Changes
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Lavoisier: mass is conserved in a chemical reaction. His careful measurements turned chemistry into a science (Father of Chemistry) Investigate the reaction of hydrogen with oxygen to produce water (2H 2 + O 2 2H 2 O). Defining Chemistry Defining Chemistry
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The chemical equation for the formation of water can be visualized as two hydrogen molecules reacting with one oxygen molecule to form two water molecules: 2H 2 + O 2H 2 O Chemical Equations Chemical Equations Products Reactants
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The plus sign (+) means “react” and the arrow points towards the substance produce in the reaction. The chemical formulas on the right side of the equation are called reactants and after the arrow are called product. The numbers in front of the formulas are called stoichiometric coefficients. Reading Chemical Equations Reading Chemical Equations Coefficient Reactants Products
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Understanding Chemical Equations Understanding Chemical Equations Coefficients and subscripts included in the chemical formula have different effects on the composition.
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Law of conservation of mass: matter cannot be lost in any chemical reactions. Balancing Chemical Equations
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This note was uploaded on 02/20/2011 for the course CHEM 101 taught by Professor John during the Spring '11 term at Caldwell College.

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Chapter 3 Stoichiometry - CHEMISTRY The Central Science 9th...

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