F2024 Final Chemistry Review

Front

What are subscripts in a chemical formula?

Back

Subscripts are the small numbers written to the lower right of an element's symbol in a chemical formula, indicating the number of atoms of that element in a molecule.

Front

What is the charge of an anion?

Back

An anion has a negative charge.

Front

In the balanced reaction 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe, what is the mole ratio of Mg to Fe?

Back

The mole ratio of Mg to Fe is 3 mol Mg / 2 mol Fe.

Front

How can the concentration of a mixture be increased?

Back

The concentration can be increased by adding more solute (e.g., powder) to the mixture.

Front

What is the formula for strontium hydroxide?

Back

The formula for strontium hydroxide is Sr(OH)2.

Front

What is the definition of a solute?

Back

A solute is a substance that is dissolved in a solvent to form a solution.

Front

What is the definition of a solvent?

Back

A solvent is a substance that dissolves a solute, resulting in a solution.

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.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation.

Front

What is the difference between an ionic bond and a covalent bond?

Back

An ionic bond is formed by the transfer of electrons from one atom to another, while a covalent bond is formed by the sharing of electrons between atoms.