Welcome to the Quiz!
This quiz contains 8 questions from a mix of 1 subtopics.
What is a chemical reaction represented by using the names of reactants and products called?
none of the above
word equation
symbol equation
balanced symbol equation
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What is the balanced symbol equation for the reaction between magnesium and oxygen?
2Mg + O2 —> 2MgO
Mg + 2O2 —> MgO
Mg + O2 —> MgO
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What is the word equation for the reaction between magnesium and oxygen?
magnesium + Oxygen —> Magnesium Oxide
magnesium + Oxygen —> Magnesium Dioxide
magnesium + Oxygen —> Magnesium Hydroxide
none of the above
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In a balanced symbol equation, what does the number in front of a symbol represent?
the number of atoms of that element in the molecule
the number of molecules of that substance
the charge of the ion
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What is the balanced symbol equation for the reaction between hydrogen and oxygen to form water?
H2 + O —> H2O
2H2 + O2 —> 2H2O
H + O —> H2O
2H + O2 —> H2O
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What is the word equation for the reaction between hydrogen and oxygen to form water?
hydrogen + Oxygen —> Hydrogen Peroxide
hydrogen + Oxygen —> Water
hydrogen + Oxygen —> Hydrogen Oxide
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A equation uses chemical formulas and symbols to represent a chemical reaction.
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Explain the steps to balance a symbol equation.
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