'Balance polyatomic ions' diaporamas de présentation

Chemical reactions

Chemical reactions. Classifications Reactions in solution Ionic equations. Learning objectives. Distinguish between chemical and physical change Describe concepts of oxidation and reduction Classify reaction according to types of reactants and products

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Chapter 5: Chemical Reactions

Chapter 5: Chemical Reactions. Suggested Problems: 1-8, 20, 28, 30, 35, 44, 46, 50, 52, 56. Reactants Products. Chemical Equations. Reactants: Are the species that are combined together to give a chemical change

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Intro to Reactions

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Balancing Chemical Equations

UNIT 7-CHEMICAL REACTIONS:. Balancing Chemical Equations. Law of Conservation of Mass:. In a chemical reaction mass is neither created nor destroyed. total mass stays the same. atoms can only rearrange. 36 g. 4 g. 32 g. Examples. NaCl ? Na + Cl 2 40 g 15g + _____.

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Balancing Equations

Chemical Reactions. Balancing Equations. A. Balancing Steps. 1. Write the unbalanced equation. 2. Count atoms on each side. 3. Add coefficients to make #s equal. Coefficient ? subscript = # of atoms 4. Reduce coefficients to lowest possible ratio, if necessary.

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