Fall 24 5th Block Midterm

Visible light, X rays, infrared radiation, and radio waves all have the same

• energy.
• wavelength.
• speed.
• frequency.

The angular momentum quantum number indicates the

• orientation of an orbital around the nucleus.
• direction of the spin of the electron in its orbital.
• shape of the orbital.
• main energy level of an orbital.

Which electron configuration belongs to Chlorine (Cl)?

• 1s² 2s² 2p⁶ 3s² 3p⁵
• 1s² 2s² 2p⁶ 3s² 3p⁶
• 1s² 2s² 2p⁶ 3s² 3p⁷

The statement that an electron occupies the lowest available energy orbital is

• Hund’s Rule
• Pauli Exclusion Principle
• Aufbau Principle
• Bohr's Law

According to Bohr, electrons cannot reside at ____ in the figure below.

• point A
• point B
• point C
• point D

A three-dimensional region around a nucleus where an electron may be found is called a(n)

• spectral line.
• electron path.
• orbital.
• orbit.

Who proposed that electrons are only found in specific, discrete circular orbits around the nucleus?

• Albert Einstein
• Erwin Schrodinger
• Ernest Rutherford
• Niels Bohr

It has a fixed volume and has a fixed shape.

• solid
• liquid
• gas
• plasma

Which of the following is a homogeneous mixture?

• oxygen
• salt
• gatorade
• milk

A compound is

• a substance, made of two or more atoms that are chemically bonded, that can be broken down into simpler, stable substances.
• any substance, whether it is chemically bonded or not.
• a substance that cannot be broken down into simpler, stable substances.
• the smallest unit of matter that maintains its chemical identity.