Unit 4: Types of Reactions & Balancing

Front

What is a precipitate in a chemical reaction?

Back

A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.

Front

What is the Law of Conservation of Mass?

Back

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

Front

How do you balance a chemical equation?

Back

To balance a chemical equation, adjust the coefficients of the reactants and products to ensure that the number of atoms of each element is the same on both sides.

Front

What is a double displacement reaction?

Back

A double displacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds.

Front

What is the general form of a synthesis reaction?

Back

A synthesis reaction occurs when two or more reactants combine to form a single product, represented as A + B → AB.

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products, represented as AB → A + B.

Front

What is a single displacement reaction?

Back

A single displacement reaction occurs when one element replaces another in a compound, represented as A + BC → AC + B.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

Front

What is the role of coefficients in a balanced equation?

Back

Coefficients indicate the number of molecules or moles of each reactant and product involved in a chemical reaction.

Front

What is the formula for calculating the number of moles?

Back

The number of moles can be calculated using the formula: moles = mass (g) / molar mass (g/mol).