General Chemistry Quiz

What is the wave-particle duality?

• Light can be both a wave and a particle

• Light is only a wave

• Light is only a particle

• Light has no properties

Who developed the theory of electromagnetic radiation?

• Isaac Newton

• James Clerk Maxwell

• Thomas Young

• Albert Einstein

What does the wavelength of a wave represent?

• The height of the wave

• The distance between two peaks

• The speed of the wave

• The frequency of the wave

What is the unit for frequency?

• Meters

• Joules

• Seconds

• Hertz

What is the photoelectric effect?

• Electrons are ejected from a metal surface by light

• Electrons are created from light

• Light travels in a vacuum

• Light is absorbed by a metal

What did Niels Bohr propose about the hydrogen atom?

• It has only one energy level

• It has only certain allowable energy levels

• It continuously emits energy

• It has no electrons

What is the principal quantum number?

• It defines the spin of an electron

• It defines the energy level of an electron

• It defines the shape of the orbital

• It defines the color of light

What is the Pauli Exclusion Principle?

• Electrons are always in pairs

• Electrons can exist in any energy level

• No two electrons can have the same set of quantum numbers

• Electrons can have the same quantum numbers

What happens to the size of an atom as you move across a period?

• It doubles

• It decreases

• It increases

• It stays the same

What is ionization energy?

• Energy needed to create an atom

• Energy needed to cool an atom

• Energy needed to remove an electron

• Energy needed to add an electron