Semester 2 Chemistry Review (Short)

Front

What is Molar Mass?

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in a chemical formula.

Front

How do you calculate the Molar Mass of a compound?

Back

Add together the atomic masses of all the elements in the compound, multiplied by the number of times each element appears in the formula.

Front

What is a Single Replacement Reaction?

Back

A type of chemical reaction where one element replaces another in a compound, resulting in a new element and a new compound.

Front

What is a Double Replacement Reaction?

Back

A chemical reaction where two compounds exchange ions or bonds to form two new compounds.

Front

What is a Synthesis Reaction?

Back

A reaction where two or more simple substances combine to form a more complex substance.

Front

What is a Decomposition Reaction?

Back

A reaction where a single compound breaks down into two or more simpler products.

Front

What is Percent Composition?

Back

The percentage by mass of each element in a compound, calculated by dividing the mass of the element by the total molar mass of the compound and multiplying by 100.

Front

How do you find the Percent Composition of an element in a compound?

Back

Divide the mass of the element in one mole of the compound by the total molar mass of the compound, then multiply by 100.

Front

What is a Covalent Bond?

Back

A chemical bond formed when two atoms share one or more pairs of electrons.

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.