Balancing Chemical Equations

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

Balance this equation: SnO₂ + H₂ → Sn + 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.

Front

Is the equation balanced?: 2H₂O + O₂ --> 4MgO + 3Fe

Back

No

Front

Balance this equation:
_Al +_HCl --> _H₂ +_AlCl₃

Back

2, 6, 3, 2

Front

When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced.

Back

coefficient