Balancing Chemical Equations

Front

What coefficient should be used to make the equation N₂+O₂--> _NO balanced? Options: 1, 2, 3, 4

Back

2

Front

Which equation is balanced?

PbO₂ + 2H₂

,

SO₂ + H₂0 --> H₂SO₄

,

2Na + 2H₂O --> 2NaOH + H₂

Back

2Na + 2H₂O --> 2NaOH + H₂

Front

What law governs the balancing of chemical equations?

Back

Law of Conservation of Matter/Mass

Front

Total number of atoms in 5Na₃PO₄

Back

40

Front

Chemical Reaction

Back

the process in which substances undergo chemical changes that result in the formation of new substances

Front

Chemical Equation

Back

A representation of a chemical reaction

Front

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

Back

no

Front

Is this equation balanced?

Back

no

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