While balancing a chemical equation, the number of atoms of each element is kept the same on the reactant and product sides. Which law does this demonstrate?
Answer and explanation
Correct answer: Law of conservation of mass
In a balanced equation, the number of atoms of every element is the same on both the reactant and product sides. During a chemical reaction, atoms are neither created nor destroyed; they are only rearranged. Hence, the total mass remains unchanged, demonstrating the law of conservation of mass. The law of constant proportions concerns the fixed mass ratio of elements in a compound, not the balancing of an equation.
Frequently asked questions
What is the correct answer to this question?
Law of conservation of mass
Why is this the correct answer?
In a balanced equation, the number of atoms of every element is the same on both the reactant and product sides. During a chemical reaction, atoms are neither created nor destroyed; they are only rearranged. Hence, the total mass remains unchanged, demonstrating the law of conservation of mass. The law of constant proportions concerns the fixed mass ratio of elements in a compound, not the balancing of an equation.
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.
