Help
Contact
For teachers and institutes
Search courses, problems, tests…
A
A
>_
StemPy Lab
Courses ▾
Problems ▾
Practice ▾
Mock Tests
Classes
Groups
Community ▾
A
A
Why must a chemical equation be balanced? | StemPy Lab
Quizzes
/
Why must a chemical equation be balanced?
Chemistry
Easy
High School (9–10)
General
Chemical Reactions › Chemical Equations
Created by
StemPy Lab
Why must a chemical equation be balanced?
Because the products must be gases
So that the reaction goes faster
Atoms are neither made nor destroyed in a reaction, so mass is conserved
So that the number of molecules on each side is equal
Check Answer
Log in to save
Tag someone
⚑ Report
← All Quizzes
← Why can isotopes of an element not be separated by a chemical reaction?
A student balances Mg + O₂ → MgO by writing MgO₂ on the right. What is the mistake? →
More on
Chemical Reactions › Chemical Equations
Discussion (0)
Log in
to join the discussion.
Loading…
Problems on this topic
24 g of methane burns completely: CH₄ + 2O₂ → CO₂ + 2H₂O.
Hard
8 g of hydrogen burns in oxygen: 2H₂ + O₂ → 2H₂O.
Medium
Zinc reacts with sulphuric acid: Zn + H₂SO₄ → ZnSO₄ + H₂.
Medium
200 g of calcium carbonate is heated until it has all broken up: CaCO₃ → CaO + CO₂.
Medium
All problems on this topic →
Created by StemPy LabCreated by StemPy Lab