Free Printable NF2F - Bohr's Atomic Model

Worksheets

NF2F - Bohr's Atomic Model

Total questions: 20

Worksheet time: 7mins

Name

Class

Date

Waves with a large wavelength have a __________ frequency

high

low

Which is a particle of electromagnetic radiation with no mass that carries a quantum of energy?

electron

neutron

microwave

photon

Which model describes electrons as orbiting around a central nucleus?

Bohr

Rutherford

Quantum Mechanical

Plum Pudding

What are patterns made when excited electrons emit light of certain wavelengths?

electromagnetic spectra

atomic emission spectra

spectroscopes

prisms

Number of waves per second. Measured in Hertz (Hz)

Amplitude

Wavelength

Frequency

Quantum

Distance between one point on a wave and the nearest point just like it.

amplitude

wavelength

frequency

quantum

Bohr's model of the atom proposed that ___.

electrons move around the nucleus in fixed orbits

neutrons move around the nucleus

neutrons do not exist, but are just paired protons and electrons

the nucleus spins

The impossibility to know simultaneously the exact position and momentum of a particle is called the:

Einstein Uncertainty Principle

Moseley Uncertainty Principle

Heisenburg Uncertainty Principle

Bohr Uncertainty Principle

An atom that has gained energy beyond normal is said to be ...

excited

energized

naturalized

grounded

10.

How many electrons can fit in the first energy level?

11.

Valence electrons are located...

inside the nucleus

in outer space

on the outermost electron shell in an atom

on the electron shell closest to the nucleus.

12.

The energy of an electron __________ as it moves further away from the nucleus

increases

decreases

13.

When an atom has all of its electrons in the lowest energy orbitals available, the atom is

in ground state

in excited state

giving off light energy

unstable

14.

____________ represents the distance the electrons are from the nucleus

energy level

sublevel

15.

The relationship between wavelength & frequency is....

Directly Proportional

Indirectly Proportional

16.

A wave with a large wavelength will have a ______ frequency and _____ energy

high, low

high, high

low, high

low, low

17.

The frequency of violet light is 7.5x10¹⁴Hz. What is its wavelength?

4.0x10^-7 m

4.0x10⁷ m

2.25x10²³m

2.25x10²³ Hz

18.

Ground state means that an electron is...

at its lowest possible potential energy

in the first shell of an atom

laying low for the weekend

removed from an atom

19.

In order to go from ground state to an excited state, an electron must

emit energy

absorb energy

rotate

wiggle

20.

When an electron returns to ground state from an excited state, the atom will