Balancing Chemical Equation

A number written in the lower right side of the chemical formula, show the number of atoms of each type in the molecules.

• coefficient

• parenthesis

• subscript

• superscript

State that the total mass of the reactant must be equal to the total mass in the product.

• Law of Conservation of Mass

• Law of Gravity

• Law of Reflection

• Law of Conservation of Energy

A numerical number attach in front of the chemical formula, denotes the number of molecules or mole in a compound.

• coefficient

• molecules

• subscript

• superscript

A method used to balance out the number of each element in both side of the equation.

• Inspection method

• Redox Reaction

• Valence number

• None of the above

It is used to form subgroups of atom within a molecule.

• coefficient

• parenthesis

• subscript

• superscript

It is the standard way of writing chemical formula.

• coefficient

• notation

• subscript

• superscript

Which of the following set of coefficients would balance the given equation?

__Al + __Fe(NO₃)₂ → __Al(NO₃)₃ + __Fe

• 2,2,3,3

• 2,3,2,3

• 3,2,3,2

• 3,3,2,2

In the chemical formula Mg(NO₃)₂ , the numerical coefficient is equal to_____.

• 1

• 2

• 3

• 6

In the compound Mg(NO₃)₂, how many atoms of oxygen is present?

• 1

• 2

• 3

• 6

In the compound Mg(NO₃)₂, how many atoms of nitrogen is present?

• 1

• 2

• 3

• 6