Chemistry final exam

Front

What is a Double Replacement Reaction?

Back

A chemical reaction where two compounds exchange ions or bonds to form two new compounds. Example: AB + CD → AD + CB.

Front

How do you balance a chemical equation?

Back

By ensuring the number of atoms for each element is the same on both sides of the equation. Use coefficients to adjust the quantities.

Front

What are Reactants in a chemical equation?

Back

Substances that undergo a chemical change in a reaction, found on the left side of the equation.

Front

What are Products in a chemical equation?

Back

Substances formed as a result of a chemical reaction, found on the right side of the equation.

Front

What is a Synthesis Reaction?

Back

A type of reaction where two or more simple substances combine to form a more complex product. Example: A + B → AB.

Front

What is a Decomposition Reaction?

Back

A reaction where a single compound breaks down into two or more simpler products. Example: AB → A + B.

Front

What is a Single Replacement Reaction?

Back

A reaction where one element replaces another in a compound. Example: A + BC → AC + B.

Front

What is a Combustion Reaction?

Back

A reaction that occurs when a substance combines with oxygen, releasing energy in the form of light or heat. Example: Hydrocarbon + O₂ → CO₂ + H₂O.

Front

What is the Law of Conservation of Mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it remains constant.

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.