Types of Chemical Reactions

Front

What type of reaction is represented by the equation Pb(NO₃)₂ --> PbO + NO₂ + O₂?

Back

Decomposition reaction.

Front

What does the law of conservation of mass state about chemical reactions?

Back

The total mass of the reactants is equal to the total mass of the products.

Tags

NGSS.MS-PS1-5

Front

What is a compound? Provide an example.

Back

A compound is a substance formed when two or more elements are chemically bonded together. Example: sodium chloride (NaCl).

Tags

NGSS.MS-PS1-1

Front

Define a double replacement reaction.

Back

A double replacement reaction occurs when two compounds react to form two new compounds.

Front

What can mass not be during a chemical reaction?

Back

Mass cannot be created or destroyed.

Tags

NGSS.MS-PS1-5

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more reactants combine to form a single product.

Tags

NGSS.MS-PS1-1

Front

What is an example of a combustion reaction?

Back

An example of a combustion reaction is the burning of methane: CH₄ + 2O₂ --> CO₂ + 2H₂O.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the difference between an endothermic and exothermic reaction?

Back

An endothermic reaction absorbs heat, while an exothermic reaction releases heat.

Tags

NGSS.MS-PS1-4

Front

What is a single replacement reaction?

Back

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

Front

What is the general form of a chemical equation for a double replacement reaction?

Back

AB + CD --> AD + CB, where AB and CD are compounds.