Balancing Equations Practice

Front

PCl₅  +  ___ H₂O  →  ___ HCl  +   H₃PO₄

Back

4, 5

Front

 Mg  +  ___ HCl  →   MgCl₂  +   H₂

Back

2

Front

Which side of a chemical equation is the reactant side?

Back

Left (before the yields sign)

Front

Which side of a chemical equation is the product side?

Back

Right (after the yields sign)

Front

Which problem is balanced? Options: PbO₂ + 2H₂, SO₂ + H₂0 --> H₂SO₄, 2Na + 2H₂O --> 2NaOH + H₂

Back

2Na + 2H₂O --> 2NaOH + H₂

Front

Balance this equation.
_SnO₂ +_H₂-->_Sn +_H₂O

Back

1,2,1,2

Front

Balance this equation.
_CF₄ + _Br₂ -- _CBr₄ + _F₂

Back

1,2,1,2

Front

Balance this equation.
_CH₄ + _O₂ --> _CO₂ + _H₂O

Back

1,2,1,2

Front

What is the little number after an element in a chemical equation called? Example: H₂

Back

Subscript

Front

Law of Conservation of Mass

Back

Matter cannot be gained or lost in a chemical reaction.