Which statement best explains the relationship between a balanced chemical equation and the law of conservation of mass?
Answer and explanation
Correct answer: In a balanced equation, the number of atoms of each element is the same on the reactant and product sides.
According to the law of conservation of mass, atoms are neither created nor destroyed in a chemical reaction. Therefore, in a balanced chemical equation, the number of atoms of every element is the same on the reactant and product sides, so total mass is conserved. Option B is incorrect because products may be gases, liquids, or solids.
Frequently asked questions
What is the correct answer to this question?
In a balanced equation, the number of atoms of each element is the same on the reactant and product sides.
Why is this the correct answer?
According to the law of conservation of mass, atoms are neither created nor destroyed in a chemical reaction. Therefore, in a balanced chemical equation, the number of atoms of every element is the same on the reactant and product sides, so total mass is conserved. Option B is incorrect because products may be gases, liquids, or solids.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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