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809 KEY Balancing Equations Worksheet 2026/2027 Latest Update | Chemistry Practice Questions & Answers | Study Guide

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Strengthen your chemistry skills with this comprehensive 809 KEY Balancing Equations Worksheet, updated for 2026/2027. This study resource focuses on balancing chemical equations, identifying reactants and products, applying conservation of mass, and practicing coefficient placement. Ideal for chemistry students preparing for worksheets, quizzes, tests, and exams, it provides structured practice and answer-focused review to reinforce essential equation-balancing skills. Use alongside classroom notes, textbooks, and instructor materials for effective chemistry revision and assessment preparation.

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8.09 Balancing Chemical Equations Worksheet
1. (2pts) Explain why chemical equations must be balanced? Include the correct law.
Answer: ___

2. (1pt) What number can be changed when balancing chemical equations?
Answer: ___

3. (1pt) What number must remain the same when balancing chemical equations?
Answer: ___

4. (1pt) When a chemical equation is balanced, the number of ___ on the reactants side
must ___ the number of ___ on the product side.

5. (10pts) Now balance the following equations. Use the Help Document in lesson 8.09 if
you need help. Show your work. One example is provided.

Balance the equations
EX Not balanced Balanced
Na + Cl2 à NaCl 2Na + _Cl2 à 2NaCl
Reactants (list atoms separately) Products (list atoms separately)
Na (1) x 2 = 2 Na (1) x 2 = 2
Cl (2) do nothing Cl (1) x 2 = 2
1 _1_ Na + _1_ H2O à _1_ NaOH + _2_ H2
Reactants Products
Na 1x1 = 1
Na = 1 x 1 = 1
H (in NaOH) = 1
H =1x2=2
H (in H2) =2
Total (Add) = 3
O=1x1=1
O = 1 x1 = 1
2 _2_ Mg + _1_ O2 à _2_ MgO
Reactants Products
Mg = 2 x 1 = 2 Mg =2 X 1 = 2

O = 1 X 2 =2 O =2X1=2



This study source was downloaded by 1827175 from cliffsnotes.com on 01-08-2026 16:29:39 GMT -06:00

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