Balance chemical equations by adding coefficients so each side has the same number of every atom. There are 2 sheets here: level 1 and level 2. Pick one from the tray, print it, and add its answer key as a second page if you want one.
Worksheets
NameDate
Balance the equations: level 1
Write a coefficient in each box so both sides have the same number of each atom. Write 1 where no other number is needed.
Fe2O3 + CO → Fe + CO2
Na + Cl2 → NaCl
Na + H2O → NaOH + H2
CH4 + O2 → CO2 + H2O
H2O2 → H2O + O2
K + Br2 → KBr
Al2(SO4)3 + Ca(OH)2 → Al(OH)3 + CaSO4
KClO3 → KCl + O2
Cu + AgNO3 → Cu(NO3)2 + Ag
N2 + H2 → NH3
Using these sheets
The answer key matches the sheet on screen, including after you make new problems.
Sheets print on US Letter paper. On A4, choose “Fit to printable area” in the print dialog.
Questions
What grade are these balancing equations worksheets for?
They suit grades 8 to 11. Each sheet in the tray practices it a different way, so you can pick the one that fits.
Is there an answer key?
Yes. Tick “add the answer key as page 2” before printing, or turn on Answer key to check work on screen.
Do I need an account to print?
No. The sheets print straight from this page, free, with no sign-up.