Law of COM
Quiz by Kassandra Wendling
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41 questions
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- Q1Is the chemical equation Mg + O2 -> MgO2 balanced or unbalanced?UnbalancedBalanced30s
- Q2Is the chemical equation H2 + O2 -> H2O balanced or unbalanced?BalancedUnbalanced30s
- Q3Is the chemical equation 2H2 + O2 -> 2H2O balanced or unbalanced?BalancedUnbalanced30s
- Q4Is the chemical equation 2CH4 + 3O2 -> 2CO2 + 4H2O balanced or unbalanced?BalancedUnbalanced30s
- Q5Is the chemical equation NaCl -> Na + Cl2 balanced or unbalanced?UnbalancedBalanced30s
- Q6What 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
- Q7Is the equation "2H₂ + O₂ → H₂O" balanced?UnbalancedBalanced30s
- Q8How 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
- Q9If 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
- Q10In the equation "2Na + Cl₂ → 2NaCl," is the equation balanced?BalancedUnbalanced30s
- Q11How 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
- Q12Is the equation "N₂ + H₂ → NH₃" balanced?UnbalancedBalanced30s
- Q13How 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
- Q14What element is unbalanced in the equation "C₆H₁₂O₆ → CO₂ + H₂O"?Oxygen (O)Carbon (C)Hydrogen (H)all30s
- Q15In the balanced equation "4Fe + 3O₂ → 2Fe₂O₃," how many iron (Fe) atoms are on the left side?1 iron (Fe) atoms0 iron (Fe) atoms3 iron (Fe) atoms4 iron (Fe) atoms30s