Balancing chemical equations

Front

What is the part of the chemical equation in green called?
Fe + S --> FeS

Back

reactants

Front

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

Back

Subscript

Front

What coefficient should be used to make the equation N₂+O₂--> _NO balanced?

Back

2

Front

How many HCl molecules do you need to balance this equation? Mg + __HCl ---> MgCl₂ + H₂

Back

2

Front

Is this balanced?
Al + O₂ → 2Al₂O₃

Back

No

Front

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

Back

2,6,3,2

Front

Is the following reaction balanced?
NaHCO₃ --> Na₂CO₃ + H₂O + CO₂

Back

no

Front

__Na + O₂ -----> __Na₂O

Balance it

Back

4Na + O₂ ---> 2Na₂O

Front

Balance the following equation: ___ H₂+ ___ O₂→___ H₂O

Back

2, 1, 2

Front

Balance the Chemical Equation: __Na + __H₂O --> __NaOH + __H₂

Back

2,2 --> 2,1