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Chemistry Quiz 4

Quiz by Kassandra Wendling

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63 questions
Show answers
  • Q1
    What does it mean for a chemical equation to be balanced?
    It means that there are different amounts of atoms on either side of the equation.
    It means that there are the same number of atoms of each element on both sides of the equation.
    It means that the weight is the same for each element.
    It means that the equation looks the same on both sides of the equation.
    30s
  • Q2
    Is the equation "2H₂ + O₂ → H₂O" balanced?
    Unbalanced
    Balanced
    30s
  • Q3
    How many oxygen atoms are on each side of the unbalanced equation "CH₄ + O₂ → CO₂ + H₂O"?
    Left side: 2 oxygen atoms; Right side: 3 oxygen atoms.
    Left side: 4 oxygen atoms; Right side: 2 oxygen atoms.
    Left side: 2 oxygen atoms; Right side: 2 oxygen atoms.
    Left side: 1 oxygen atom; Right side: 5 oxygen atoms.
    30s
  • Q4
    If a chemical equation is unbalanced, is it a true representation of a chemical reaction?
    Yes, it is a true representation.
    No, it's not a true representation.
    30s
  • Q5
    In the equation "2Na + Cl₂ → 2NaCl," is the equation balanced?
    Balanced
    Unbalanced
    30s
  • Q6
    How many chlorine atoms are on each side of the balanced equation "2Na + Cl₂ → 2NaCl"?
    Left side: 2 chlorine atoms; Right side: 1 chlorine atom.
    Left side: 1 chlorine atom; Right side: 2 chlorine atoms.
    Left side: 2 chlorine atoms; Right side: 2 chlorine atoms.
    Left side: 4 chlorine atoms; Right side: 2 chlorine atoms.
    30s
  • Q7
    Is the equation "N₂ + H₂ → NH₃" balanced?
    Unbalanced
    Balanced
    30s
  • Q8
    How many nitrogen atoms are on each side of the unbalanced equation "N₂ + H₂ → NH₃"?
    Left side: 2 nitrogen atoms; Right side: 3 nitrogen atom.
    Left side: 2 nitrogen atoms; Right side: 2 nitrogen atom.
    Left side: 4 nitrogen atoms; Right side: 4 nitrogen atom.
    Left side: 2 nitrogen atoms; Right side: 1 nitrogen atom.
    30s
  • Q9
    What element is unbalanced in the equation "C₆H₁₂O₆ → CO₂ + H₂O"?
    Oxygen (O)
    Carbon (C)
    Hydrogen (H)
    all
    30s
  • Q10
    In the balanced equation "4Fe + 3O₂ → 2Fe₂O₃," how many iron (Fe) atoms are on the left side?
    1 iron (Fe) atoms
    0 iron (Fe) atoms
    3 iron (Fe) atoms
    4 iron (Fe) atoms
    30s
  • Q11
    Is the equation "3Mg + N₂ → Mg₃N₂" balanced?
    Unbalanced
    Balanced
    30s
  • Q12
    How many magnesium atoms are on each side of the balanced equation "3Mg + N₂ → Mg₃N₂"?
    Left side: 1 magnesium atoms; Right side: 3 magnesium atoms.
    Left side: 3 magnesium atoms; Right side: 6 magnesium atoms.
    Left side: 3 magnesium atoms; Right side: 3 magnesium atoms.
    Left side: 3 magnesium atoms; Right side: 1 magnesium atoms.
    30s
  • Q13
    In the unbalanced equation "H₂ + O₂ → H₂O," how many hydrogen atoms are on the left side?
    4 Hydrogen
    1 Hydrogen
    0 Hydrogen
    2 Hydrogen
    30s
  • Q14
    In a chemical equation, what is the term for substances that are present at the beginning of a chemical reaction?
    Products
    Reactants
    Catalysts
    Intermediates
    30s
  • Q15
    Which of the following is an example of a physical change?
    Rusting iron
    Burning wood
    Cooking an egg
    Melting ice
    30s

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