Unit 2 Atomic Theory Part 2 Test Review

Front

What model of the atom consists of protons and neutrons in a central nucleus, with electrons occupying discrete energy levels?

Back

Bohr Model

Front

What did Bohr add to the model of the atom?

Back

That atoms have orbiting electrons that can jump energy levels.

Front

Which area of a Bohr Model shows an electron occupying the lowest energy level?

Back

First shell

Front

What is the electron configuration of Phosphorus (P)?

Back

1s²2s²2p⁶3s²3p³

Front

What is the energy of a single photon of light with a wavelength of 657nm?

Back

3.03 x 10^{-19} J

Front

Define the term 'atomic theory'.

Back

A scientific theory that explains the nature of matter by stating that matter is composed of discrete units called atoms.

Front

What is the charge of a proton?

Back

Positive (+1)

Front

What is the charge of a neutron?

Back

Neutral (0)

Front

What is the charge of an electron?

Back

Negative (-1)

Front

What is the significance of the quantum model of the atom?

Back

It describes electrons in terms of probabilities and energy levels rather than fixed orbits.