Question detail
Which of the following is true about a balanced chemical equation?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations
Question
- A. The total mass of reactants is different from the total mass of products.
- B. The number of atoms of each element is the same on both sides.
- C. It can have different numbers of molecules on each side.
- D. It does not need to be balanced for the reaction to occur.
Answer
The number of atoms of each element is the same on both sides.
Explanation
A balanced chemical equation ensures that the number of atoms for each element is conserved, meaning they are the same on both sides of the equation.
Common mistake
Misunderstanding Mass Conservation
Students often believe that mass can change during a chemical reaction, especially when gases are involved.
Emphasize that the law of conservation of mass states that no atoms are lost or made, so the total mass of reactants equals the total mass of products, regardless of the state of matter. Keep the correction anchored to Conservation of mass and balanced chemical equations; check formula, substitution, calculation, final answer, and unit where relevant.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.