Chemistry Quiz 4
Quiz by Kassandra Wendling
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63 questions
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- Q1What 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
- Q2Is the equation "2H₂ + O₂ → H₂O" balanced?UnbalancedBalanced30s
- Q3How 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
- Q4If 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
- Q5In the equation "2Na + Cl₂ → 2NaCl," is the equation balanced?BalancedUnbalanced30s
- Q6How 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
- Q7Is the equation "N₂ + H₂ → NH₃" balanced?UnbalancedBalanced30s
- Q8How 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
- Q9What element is unbalanced in the equation "C₆H₁₂O₆ → CO₂ + H₂O"?Oxygen (O)Carbon (C)Hydrogen (H)all30s
- Q10In 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
- Q11Is the equation "3Mg + N₂ → Mg₃N₂" balanced?UnbalancedBalanced30s
- Q12How 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
- Q13In the unbalanced equation "H₂ + O₂ → H₂O," how many hydrogen atoms are on the left side?4 Hydrogen1 Hydrogen0 Hydrogen2 Hydrogen30s
- Q14In a chemical equation, what is the term for substances that are present at the beginning of a chemical reaction?ProductsReactantsCatalystsIntermediates30s
- Q15Which of the following is an example of a physical change?Rusting ironBurning woodCooking an eggMelting ice30s