Name Period: Balancing Chemical Equations Worksheet
NamePeriod:Balancing Chemical Equations WorksheetFor the following:1. Draw a circle around each subscript.2. Draw a square around each coefficient.H2O5Cl22Mg3H2O2For the following1. List the chemical symbols of each element.2. Give the number of atoms of each element.HClCO2Na2SO4Balance the following chemical equations.1. Cu2O C Cu CO22. H2O2 H2O O23. Al Fe3N2 AlN Fe4. Ag2S Ag S85. ZnS AlP Zn3P2 Al2S36. Fe(OH)3 Fe2O3 H2OGiven the two chemical equations, circle the one that is balanced.7.a. 2Na Cl2 2NaClb. 2Na 2Cl2 2NaCl8.a. C3H8 5O2 3CO2 4H2Ob. 2C3H8 5O2 3CO2 8H2O
9.a. 2NH3 5O2 2NO 3H2Ob. 4NH3 5O2 4NO 6H2O10. a. Y(NO3)2 GaPO4 YPO4 Ga(NO3)2b. 2Y(NO3)2 2GaPO4 2YPO4 Ga(NO3)2For practice and homework balance the equations below.11)N2 H2 NH312)KClO3 KCl O213)NaCl F2 NaF Cl214)H2 O2 H2O15)Pb(OH)2 HCl H2O PbCl216)AlBr3 K2SO4 KBr Al2(SO4)317)CH4 O2 CO2 H2O18)C3H8 O2 CO2 H2O19)C8H18 O2 CO2 H2O20)FeCl3 NaOH Fe(OH)3 NaCl21)P O2 P2O522)Na H2O NaOH H223)Ag2O Ag O224)S8 O2 SO325)CO2 H2O C6H12O6 O226)K MgBr KBr Mg27)HCl CaCO3 CaCl2 H2O CO228)HNO3 NaHCO3 NaNO3 H2O CO229)H2O O2 H2O230)NaBr CaF2 NaF CaBr2
ANSWER KEYBalancing Chemical Equations WorksheetThis assessment addresses the following State of Tennessee 8th grade science standards:SPI 0807.9.10Identify the reactants and products of a chemical reaction.SPI 0807.9.11Recognize that in a chemical reaction, the mass of the reactants is equal to the mass of theproducts (Law of Conservation of Mass).For the following:1. Draw a circle around each subscript.2. Draw a square around each coefficient.H2O5Cl22Mg3H2O2For the following1. List the chemical symbols of each element.2. Give the number of atoms of each element.HClH 1Cl 1CO2C 1O 2Na2SO4Na 2S 1O 4Balance the following chemical equations.1. 2 Cu2O C 4 Cu CO22. 2 H2O2 2 H2O O23. 2 Al Fe3N2 2 AlN 3 Fe
4. 8 Ag2S 16 Ag S85. 3 ZnS 2 AlP Zn3P2 Al2S36. 2 Fe(OH)3 Fe2O3 3 H2OGiven the two chemical equations, circle the one that is balanced.7.a. 2Na Cl2 2NaClb. 2Na 2Cl2 2NaCl8.a. C3H8 5O2 3CO2 4H2Ob. 2C3H8 5O2 3CO2 8H2O9.a. 2NH3 5O2 2NO 3H2Ob. 4NH3 5O2 4NO 6H2O10. a. Y(NO3)2 GaPO4 YPO4 Ga(NO3)2b. 2Y(NO3)2 2GaPO4 2YPO4 Ga(NO3)2
WS#1: Balancing Chemical Equations – Answer KeyBalance the equations below:11)1 N2 3 H2 2 NH312)2 KClO3 2 KCl 3 O213)2 NaCl 1 F2 2 NaF 1 Cl214)2 H2 1 O2 2 H2O15)1 Pb(OH)2 2 HCl 2 H2O 1 PbCl216)2 AlBr3 3 K2SO4 6 KBr 1 Al2(SO4)317)1 CH4 2 O2 1 CO2 2 H2O18)1 C3H8 5 O2 3 CO2 4 H2O19)2 C8H18 25 O2 16 CO2 18 H2O20)1 FeCl3 3 NaOH 1 Fe(OH)3 3 NaCl21)4 P 5 O2 2 P2O522)2 Na 2 H2O 2 NaOH 1 H213)2 Ag2O 4 Ag 1 O214)1 S8 12 O2 8 SO315)6 CO2 6 H2O 1 C6H12O6 6 O216)1 K 1 MgBr 1 KBr 1 Mg17)2 HCl 1 CaCO3 1 CaCl2 1 H2O 1 CO218)1 HNO3 1 NaHCO3 1 NaNO3 1 H2O 1 CO219)2 H2O 1 O2 2 H2O220)2 NaBr 1 CaF2 2 NaF 1 CaBr221)1 H2SO4 2 NaNO2 2 HNO2 1 Na2SO4
Balancing Chemical Equations Worksheet This assessment addresses the following State of Tennessee 8th grade science standards: SPI 0807.9.10 Identify the reactants and products of a chemical reaction. SPI 0807.9.11 Recognize that in a chemical reaction, the mass of the reactants is equal t
Chemical Formulas and Equations continued How Are Chemical Formulas Used to Write Chemical Equations? Scientists use chemical equations to describe reac-tions. A chemical equation uses chemical symbols and formulas as a short way to show what happens in a chemical reaction. A chemical equation shows that atoms are only rearranged in a chemical .
The following chemical equations balancing techniques are so innovative that they will be more useful in balancing very difficult chemical reaction equations. There are a number of balancing techniques provided so far by researchers but the following method is completely differs from the p
4.1Writing and Balancing Chemical Equations By the end of this section, you will be able to: Derive chemical equations from narrative descriptions of chemical reactions. Write and balance chemical equations
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CHEM 6.1 BALANCING CHEMICAL EQUATIONS 1 Chemical reactions – balancing chemical equations/stoichiometry Reactants Products (must have atom & charge conservation for balance) Examples: 2.C O 2 2 CO Al3 P3-(s) 3
Balancing Chemical Equations PPT 1 February 27, 2015 Teachers' notes Lesson objectives Teacher's notes con't Balancing Chemical Equations 1) TEKS: 8.5F recognize whether a chemical equation containing coefficients is balanced or not and how that
Balancing Chemical Equations Process for balancing chemical equations: 1. Determine correct chemical formulas of all reactants and products 2. Start with “heavier” atoms—balance number of these on reactant and product sides of equation 3. If elements appear in equati
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