Exam 9: Chemical Reactions

As the speed of an object increases, its wavelength

In common physics terminology, a particle with a negative potential energy is in a(n) potential ______________.

The "X" in X-ray stands for ______________.

Calculate the energy E_n, in electron volts, of a hydrogen atom's electron with n = 6.

Optical scanners at the grocery store often use He-Ne ______________.

Which of these instruments is based on the theory of matter waves?

Thomson discovered the ______________ in 1897.

Glow-in-the-dark materials exhibit the phenomenon called

Aristotle's "continuous" model of matter was proved wrong about 1807 by

Who discovered the electron in 1897?

The energy of a photon equals ______________ multiplied by the frequency.

Calculate the radius in nanometers of the orbit of a hydrogen atom's electron with n = 5.

Which of these colors of light has photons of lowest energy?

The transitions of an electron in the hydrogen atom to the n = 3 level result in the

When an electron in an atom falls from a higher energy level to a lower one, a ______________ is ______________.

The frequency and energy of a photon are ______________ proportional.

A quantum is a

Which is not a possible value for the principal quantum number n?

Who developed the quantum theory in 1900 and has a constant named for him?

Who discovered the nucleus of the atom in 1911?