βοΈ Conservation of mass
Atoms are neither created nor destroyed, only rearranged. So the coefficients are adjusted until every element counts the same on both sides.
Create A4 worksheets for balancing chemical equations of real reactions, with coefficient boxes, an atom-count table and an answer key that checks every element.
Balancing a chemical equation applies the law of conservation of mass: there must be the same number of atoms of each element in the reactants and in the products. This free balancing chemical equations worksheet generator builds A4 worksheets of real reactions for Years 10-11, with an answer key worked out by the algorithm, never typed by hand. To revise element symbols before balancing, use the periodic table worksheets; to practise calculations, try the physics word problems with answers. Find more resources in Natural Sciences.
Atoms are neither created nor destroyed, only rearranged. So the coefficients are adjusted until every element counts the same on both sides.
Balancing only changes the numbers in front of each formula. Changing a subscript would change the substance: HβOβ is not water.
Metals first, then the other non-metals, with hydrogen and oxygen last. The atom-count table follows this order.
Synthesis, decomposition, single displacement, double displacement, combustion and neutralisation, each reaction named so students link it to everyday chemistry.
Level 2 brings groups in brackets such as Ca(OH)β or Alβ(SOβ)β and hydrates such as CuSOβΒ·5HβO: the subscript outside multiplies the whole group.
Every equation with the smallest whole-number coefficients and the atom count of each element on both sides, for quick marking.