2 Minute Drill Homework Complete the Chemical Equation worksheet Learner Objective Learner will be able to balance the reactants and products of a chemical reaction equation.
2 Minute Drill Homework Complete the Chemical Equation worksheet Learner Objective Learner will be able to balance the reactants and products of a chemical.
Dec 14, 2015
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2 Minute Drill
HomeworkComplete the Chemical Equation worksheet
Learner ObjectiveLearner will be able to balance the reactants and products of a
chemical reaction equation.
Lec: Balancing Chemical Equations
NaOH + HCl NaCl + H2OWhen balancing a chemical equation the quantity and types of elements in the reactants has to be equal to the quantity and types of elements in the products.
NaOH + HCl NaCl + H2OStep 1. Break the reactants and products down into the type of elements.
Na NaO OH HCl Cl
NaOH + HCl NaCl + H2OStep 2. Place the quantity of each element in the reactants and products.
Na:1 Na:1O:1 O:1H:2 H:2Cl:1 Cl:1
NaOH + HCl NaCl + H2OStep 3. Determine if the quantities of each element are the same. If they are you will state “The chemical equation is balanced. If not, state which elements are not.
Na:1 Na:1O:1 O:1H:2 H:2Cl:1 Cl:1
Fe(s) + O2 Fe2O3
Step 1:
Fe FeO O
Fe(s) + O2 Fe2O3
Fe: 1 Fe: 2O: 2 O: 3
Is this chemical equation balanced?
The chemical equation is not balanced because both Fe and O are not equal.
HCl + O2 Cl2 + H2O
Is this chemical equation balanced?
Balancing a chemical equation with a Chemical Group
Pb(NO3)2 + KI PbI2+ KNO3
Balancing a chemical equation with a Chemical Group
Pb(NO3)2 + KI PbI2+ KNO3
NO3 is a chemical group on both sides of the chemical equations.
Balancing an chemical equation with a Chemical Group
Pb(NO3)2 + KI PbI2+ KNO3
Step 1Pb: Pb: NO3: NO3 :K: K :I: I:
Balancing an chemical equation with a Chemical Group
Pb(NO3)2 + KI PbI2+ KNO3
Pb: 1 Pb :1NO3: 2 NO3 :1K: 1 K :1 I: 1 I: 2
Is this chemical equation balanced?
Challenger Balancing a Chemical Equation when the number of elements on
both sides are not equal.
Fe(s) + O2 Fe2O3
Fe: 1 Fe: 2O: 2 O: 3
Fe(s) + 3O2 2Fe2O3
Step 3:(reactants) (products)Fe: 1 Fe: 2O: 2 x 3 = 6 O: 3 x 2 = 6
Fe(s) + 3O2 2Fe2O3Step 3:The increase in O on the product side causes the Fe to increase too and now needs to be increased.
Fe: 1 Fe 2 x 2 = 4O: 2 x 3 = 6 O: 3 x 2 = 6
4 Fe(s) + 3 O2 2 Fe2O3
Fe 1 x 4 = 4 Fe 2 x 2 = 4O 2 x 3 = 6 O 3 x 2 = 6
4 Fe(s) + 3 O2 2 Fe2O3
What does this chemical reaction make?
4 Fe(s) + 3 O2 2 Fe2O3
What does this chemical reaction make?
Answer: Rust!
Balancing an chemical equation with a Chemical Group
Pb(NO3)2 + KI PbI2+ KNO3
Pb: 1 Pb :1NO3: 2 NO3 :1K: 1 K :1 I: 1 I: 2
Pb(NO3)2 + KI PbI2+ 2KNO3
Pb: 1 Pb :1NO3: 2 NO3 :1 x 2 =2K: 1 K :1 I: 1 I: 2
Pb(NO3)2 + 2KI PbI2+ 2KNO3
Pb: 1 Pb :1NO3: 2 NO3 :1 x 2 = 2K: 1 x 2 = 2 K :1 x 2= 2 I: 1 I: 2
Pb(NO3)2 + 2KI PbI2+ 2KNO3
Pb: 1 Pb :1NO3: 2 NO3 :1 x 2 =2K: 1 x 2 = 2 K :1 x 2= 2 I: 1 x 2 = 2 I: 2
H2SO4 + NaOH HOH + Na2SO4
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