# Balancing Equations: Question Preview (ID: 11389)

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What combinations of atoms are involved in this compound? KCl |
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a) 1 potassium atom and 2 chlorine atoms | b) 2 potassium atoms and 1 chlorine atom | c) 1 potassium atom and 1 chlorine atom | d) 2 potassium atoms and 2 chlorine atoms | |

What coefficient values will balance this reaction? H2+O2-->H2O |
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a) 1,2,1 | b) 2,2,3 | c) 2,2,2 | d) 2,1,2 | |

What coefficient values will balance the reaction? Al + O2 --> Al2O3 |
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a) 1,3,1 | b) 4,3,2 | c) 2,1,1 | d) 1,3,2 | |

How does a balanced equation support the Law of Conservation of Matter? |
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a) A balanced equation shows the same mass on both sides | b) A balanced equation shows the same amount of subatomic particles on both sides | c) A balanced equation show the same amount of energy on both sides | d) A balanced equation shows the same number of atoms on both sides | |

Which part of this equation represents the reactants? 2NH3+4O2 --> 2NO + 3H2O |
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a) 2NH3 | b) 2NO | c) 2NO + 3H2O | d) 2NH3+4O2 | |

Which part of this equation represents the products? 2NH3+4O2 --> 2NO + 3H2O |
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a) 2NH3+4O2 | b) 2NO | c) 2NO + 3H2O | d) 4O2 | |

In a chemical equation, what name does the left side have? |
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a) sum | b) reactants | c) products | d) yield | |

How does the law of conservation of matter apply to chemical equations? |
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a) The sum of the coefficients on each side of the equation must be the same. | b) The total number of atoms of each element on both sides of the equation must be the same. | c) The sum of the atomic numbers on both sides of the equation must be the same. | d) The sum of the atomic masses on both sides of the equation must be the same. | |

In a chemical equation, what name does the right side have? |
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a) sum | b) reactants | c) products | d) yield | |

What is a coefficient in a chemical equation? |
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a) the subscript after an atomic symbol | b) a number preceding an elemental or molecular symbol | c) a number following an elemental or molecular symbol | d) a subscript before an atomic symbol | |

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