Quantum mechanical model

Question 1

the quantum-mechanical model of the atom explains the strange behavior of ______

Answer 1

electrons, which determine chemical and physical properties of elements

Question 2

wave-particle duality

Answer 2

some properties of light (or electrons) are best described by thinking of it as a wave, while other properties are best described by thinking of it as a particle

Question 3

the most energetic waves have ___ amplitudes and ____ wavelengths

Answer 3

large amplitudes

short wavelengths

Question 4

photoelectric effect

Answer 4

many metals emit electrons when light shines upon them

light energy must come in packets (photon) that depend on frequency

Question 5

atomic spectroscopy

Answer 5

study of electromagnetic radiation absorbed and emitted by atoms
only discrete wavelengths of light are present

Question 6

Bohr model

Answer 6

electrons around nucleus in circular orbits

orbits exist only at specific, fixed distances from the nucleus

Question 7

wave nature of the electron

Answer 7

diffraction between two slits
interference pattern characteristic of waves

inherent property of individual electrons

Question 8

Heisenberg uncertainty principle

Answer 8

the more accurately you know the position of an electron, the less accurately you know its velocity and vice versa
complementary properties