Balancing Equations and Types of Reactions Practice

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, following the law of conservation of mass.

Tags

NGSS.MS-PS1-5

Front

What is the first step in balancing a chemical equation?

Back

Identify the number of atoms of each element in the reactants and products.

Tags

NGSS.MS-PS1-1

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Tags

NGSS.MS-PS1-5

Front

What are the coefficients in a chemical equation?

Back

Coefficients are the numbers placed before compounds in a chemical equation to indicate the number of molecules or moles of that substance.

Tags

NGSS.MS-PS1-1

Front

What type of reaction is represented by the equation: C₅H₁₀O₄ + O₂ → CO₂ + H₂O?

Back

Combustion reaction.

Front

What is a synthesis reaction?

Back

A synthesis reaction occurs when two or more reactants combine to form a single product.

Front

What is a decomposition reaction?

Back

A decomposition reaction occurs when a single compound breaks down into two or more simpler products.

Front

What is a single replacement reaction?

Back

A single replacement reaction occurs when one element replaces another element in a compound.

Tags

NGSS.MS-PS1-5

Front

What is a double replacement reaction?

Back

A double replacement reaction occurs when the anions and cations of two different compounds exchange places to form two new compounds.

Tags

NGSS.MS-PS1-5

Front

How do you determine the correct formula for a compound?

Back

The correct formula is determined by the charges of the ions involved and the ratio needed to balance those charges.