Quiz U 5 Chem Equa and Type

In a ______ chemical equation, each side of the equation has the same number of ______ , of each element.

• front part, charges

• balanced, atoms

• unbalanced , molecules

• conservation, mass points

Coefficients are numbers placed in _____ of a chemical symbol or formula to create a balanced chemical equation.

• conservation

• behind

• front

• atoms

Products are written to the ____ of an arrow in a chemical equation.

• right

• atoms

• left

• front

The Law of ___ of Mass states that the total mass of the reactants equals the total mass of the products.

• making

• balanced

• atoms

• conservation

There are several different categories of chemical reaction. In a ______ reaction, two or more reactants combine to form a larger product.

• synthesis

• compound

• redox

• decomposition

In a ______ reaction, a larger reactant breaks down into two or more products.

• atom

• synthesis

• decomposition

In a typical single-replacement reaction, the reactants include a _________ and a single metal.

• electron

• compound

• atom

In a double-replacement reaction, two solutions are mixed and a solid product is formed. These reactions are classified as _______ reactions.

• electron

• compound

• precipitation

Which of the following is a balanced chemical equation?

• 2 Al(OH)₃ → Al₂O₃ + 3 H₂O

• 2 Al₂O₃ + 3 H₂O → 2 Al(OH)₃

• 2 Al(OH)₃ → Al₃O₃ + 3 H₂O

• Al(OH)₃ + 3 H₂O → Al₂O₃

Balance the equation provided NH₃ + O₂ --> NO + H₂O

What is the coefficient for NO in the balanced equation?

• 1

• 2

• 3

• 4