'Positive oxidation number' diaporamas de présentation

Regents Review

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Calculating Chemical Equations

Calculating Chemical Equations. Why and How Many Atoms Bond. A Chemical Formula shows how many of which atoms are in a molecule A Subscript is a number placed below and behind a symbol to show how many of which atoms are present. H 2 O. Counting Atoms.

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Compounds and Bonding

Compounds and Bonding. GOAL: You will learn how elements combine to form compounds. Compounds. A compound is formed when two or more elements combine chemically. Elements join together in a way that makes them impossible to separate by physical means.

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Kinds of Bonds

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Redox Reactions: Oxidation and Reduction

Redox Reactions: Oxidation and Reduction. I. Electron Transfer and Redox Reactions. A. Reactions have the ability to gain or lose electrons when reacting with other elements B. Transfer of electrons from one atom to another 1. 2Na + Cl 2 ? 2Na + + 2Cl -

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Writing Chemical Formulas

Writing Chemical Formulas. Chemical Formulas represent compounds. Oxidation Numbers are used to determine the ratio in which elements combine to form compounds. Understanding Chemical Formulas. Chemical formulas are composed of a positive half and a negative half.

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Chapter 18 Section 3

Chapter 18 Section 3. Writing formulas and naming compounds. Writing chemical formulas. Oxidation number is the number of electrons gained, lost, or shared by an elements atoms Can be positive or negative In ionic compounds the oxidation number is the same as the charge of the ion

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Chapter 19

Chapter 19. Chemical Bonds Lesson 3 Part 2. Binary Ionic Compounds. Binary ionic compounds. composed of two elements. Before you can write a formula, you must have all the needed information at your fingertips.

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Rules for assigning Oxidation numbers:

Rules for assigning Oxidation numbers:. 1. All elements in their free state (uncombined with other elements) have an oxidation number of zero ( e.g. Na, Cu, Mg, H 2 , O 2 , Cl 2 , N 2 ).

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Ion Formation and Oxidation Numbers

Ion Formation and Oxidation Numbers. Kelsey Ward Teresa Chan Jordan Allen Carl Evans Sam Pape. Background. Ion formation is caused when an atom loses or gains electrons in its outer shell Oxidation number is how many electrons it lost or gained

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