Chapter 7 Chemical Reactions and Quantities Learning Check.docx

Chapter 7 Chemical Reactions and Quantities Learning Check.docx

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Balance and list the coefficients from reactants to products. 1. __Fe 2 O 3 ( s ) + __C( s ) __Fe( s ) + __CO 2 ( g ) A. 2, 3, 2,3 B. 2, 3, 4, 3 C. 1, 1, 2, 3 2. __Al( s ) + __FeO( s ) __Fe( s ) + __Al 2 O 3 ( s ) 3. __Al( s ) + __H 2 SO 4 ( aq ) __Al 2 (SO 4 ) 3 ( aq ) + __H 2 ( g ) Ch. 7 Chemical Reactions and Quantities Learning Check Problems Section 6.1 Equations for Chemical Reactions Identify the visible evidence of a chemical reaction in each of the following: 1. Methane gas in an outdoor heater burns with a blue flame. 2. Bleach removes stains from a shirt. 3. Bubbles of CO 2 are released when baking soda is mixed with vinegar. Determine if each equation is balanced or not. Write a balanced equation for the reaction of nitrogen gas (N 2 ) with hydrogen gas (H 2 ) to form ammonia gas (NH 3 ). Check the balance of atoms in the following equation: 1. number of H atoms in products 2. number of O atoms in reactants A. 2 B. 4 C. 8 3. number of Fe atoms in reactants
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