Balancing Chemical Equations #1

Front

What is the Law of Conservation of Mass?

Back

Matter cannot be created or destroyed.

Front

What coefficient goes in front of Ag to balance the equation 2Ag2O -> ___Ag + O2?

Back

4

Front

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

Back

2

Front

What coefficient should be used in front of NO to balance the equation N2 + O2 -> _NO?

Back

2

Front

Is the equation Al + O2 -> 2Al2O3 balanced?

Back

No

Front

What is a balanced chemical equation?

Back

A chemical equation where the number of atoms for each element is the same on both sides.

Front

What does it mean to balance a chemical equation?

Back

To adjust the coefficients in a chemical equation so that the number of atoms of each element is equal on both sides.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules or moles of that substance are involved.

Front

What is the purpose of balancing chemical equations?

Back

To comply with the Law of Conservation of Mass and accurately represent the reaction.

Front

What is the first step in balancing a chemical equation?

Back

Count the number of atoms of each element on both sides of the equation.