Chemistry Final Exam Review Fall 2024

Front

In every chemical reaction, what is conserved?

Back

Mass and atoms are conserved.

Front

Which substance is soluble in water, has a higher boiling point than CH4, and a lower melting point than NH3?

Back

HCl (polar) is soluble in water, has a higher boiling point than CH4, and a lower melting point than NH3.

Front

As the wavelength of an electromagnetic wave gets longer, what happens to the frequency?

Back

The frequency gets lower.

Front

What is a limiting reactant?

Back

A limiting reactant is a reactant that runs out during a chemical reaction, causes a reaction to stop, and determines the amount of products that can be made.

Front

What are the coefficients that balance the equation AlCl3 + NaOH → Al(OH)3 + NaCl?

Back

1, 3, 1, 3.

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction.

Front

Define solubility.

Back

Solubility is the ability of a substance to dissolve in a solvent at a given temperature and pressure.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the pH scale?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (acidic) to 14 (basic), with 7 being neutral.

Front

What is a catalyst?

Back

A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.