Practice Balanced Equation (5.7.1) - Language of Chemistry

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6 sample questions

Question 1.
What are reactants in a chemical equation?
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They come before the arrow in the equation.
Question 2.
Define a balanced equation.
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Think about how we keep count.
3Question 3.
What is a balanced equation?
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Think about what happens in a reaction.
4Question 4.
True or False: A chemical equation must always be balanced to represent a reaction.
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Consider the physical law we studied earlier.
Question 5.
Balance the combustion reaction of ethanol (C₂H₅OH): C₂H₅OH + O₂ → CO₂ + H₂O.
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Start balancing carbon, then hydrogen, then oxygen.
Question 6.
Balance the reaction of calcium with oxygen to form calcium oxide: Ca + O₂ → CaO.
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Remember that oxygen is diatomic.

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