Unit 4 Test

Question 1

A form of energy that exhibits wave-like behavior as it travels through space.

Answer 1

Electromagnetic Radiation

Question 2

Is the shortest distance between corresponding points on adjacent waves. (Units are usually m, cm or nanometers).

Answer 2

Wavelength

Question 3

The number of waves that pass a given point in a specific time, usually one second. (Units are usually waves/sec–one wave/second is called a hertz). Hz- units/1second.

Answer 3

Frequency

Question 4

The height of waves from origin to crest./Height of the wave

Answer 4

Amplitude

Question 5

worked on light emitted from hot objects. Analyzed it. Said that other scientists who said that light is a wave were wrong, that the hot object does not emit EM continuously as you would expect the E were in waves and that emits E in small packets

Answer 5

Max Plank

Question 6

Took Planck’s basic theory and said that EM radiation has a dual wave-particle nature. Said that EM radiation was absorbed only in whole numbers of photons.

Answer 6

Albert Einstein

Question 7

A particle of EM radiation having zero mass and carrying a package of energy.

Answer 7

Photon

Question 8

The lowest energy state of an atom.

Answer 8

Ground State

Question 9

Where the energy has higher potential energy than it has in its ground state.

Answer 9

Exited State

Question 10

the set of frequencies of the electromagnetic waves emitted by atoms of the element, unique to the element.

Answer 10

Atomic Emission Spectra

Question 11

He proposed a model that linked the atom’s electrons with photon emission.
He thought that energy states around the atom were fixed. And his model predicted the wavelengths in H’s line emission spectrum. But his model was wrong.

Answer 11

Niehls Bohr

Question 12

it is impossible to determine simultaneously both the position and velocity of an electron (or any other particle), turns out to be one of the most fundamental principles of science.

Answer 12

Heisenberg

Question 13

Using the work of Heisenberg and DeBrogile he developed an equation dealing with electrons as waves, which formed the basis of quantum theory

Answer 13

Schrodinger

Question 14

describes mathematically the wave properties of electrons and other very small particles.

Answer 14

Quantom Theory

Question 15

The 3-D region around the nucleus that indicates the probable location of an electron.

Answer 15

Orbitals

Question 16

His theory predicted that all moving particles have wave-like characteristics. ALL moving particles. This model also explains the line emission spectra requirement that electrons exist in specific energy states.

Answer 16

De Broglie