Practice Balanced Chemical Equations (1.1.1) - Chemical Reactions and Equations

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9 questions

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6 sample questions

Question 1.
What are reactants in a chemical reaction?
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Think about what you begin with before the reaction occurs.
Question 2.
Write the skeletal equation for the formation of water from hydrogen and oxygen.
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Combine two hydrogen atoms and one oxygen atom.
3Question 3.
What is a balanced equation?
- An equation where the mass is not conserved
- An equation where the number of atoms on both sides is equal
- An equation with random coefficients
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Look at how balancing is done.
4Question 4.
The reaction 2H₂ + O₂ → 2H₂O is balanced. True or False?
- True
- False
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Check the hydrogen and oxygen counts.
Question 5.
Balance the equation Fe + O₂ → Fe₂O₃ and explain the logic behind your balancing.
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Start with the most complex molecule first.
Question 6.
Given the unbalanced equation Mg + HCl → MgCl₂ + H₂, balance the equation and explain your steps.
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Look at the number of hydrogen atoms.

5 more questions in this section. Enroll free to practise them all.