Chemistry Mock Final (no equilibrium, rates, thermo)

Front

What is the emission of red light in a hydrogen atom associated with?

Back

The transition of an electron from n = 3 to n = 2 energy level.

Front

What is the balanced equation for the combustion of methane (CH4)?

Back

CH4 + 2O2 -> CO2 + 2H2O

Front

What explains the high melting point of NaCl?

Back

The strong electrostatic attraction between Na+ and Cl- ions.

Front

What is the formula to calculate the new volume of a gas when pressure and temperature change?

Back

Use the combined gas law: (P1 * V1) / T1 = (P2 * V2) / T2.

Front

What is the pH of a 0.00001 M HCl solution?

Back

The pH is 5.0.

Front

What is the definition of a mole in chemistry?

Back

A mole is defined as 6.022 x 10^23 particles (atoms, molecules, etc.).

Front

What is the significance of Standard Temperature and Pressure (STP) in gas calculations?

Back

STP is defined as 0 degrees Celsius (273.15 K) and 1 atm pressure, used as a reference point.

Front

What is the relationship between pressure and volume in gases?

Back

According to Boyle's Law, pressure and volume are inversely related at constant temperature.

Front

What is the definition of an acid according to the Brønsted-Lowry theory?

Back

An acid is a substance that donates protons (H+) in a chemical reaction.

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.