Chemistry Unit

Electrons becomes exited and the atom becomes ______ in a gaseous state when an element absorbs energy.

• instable

• stable

Atoms can emit _____ when electrons releases energy.

• light

• darkness

The pattern of light formed by an element’s light emissions, which is then separated into the different wavelengths that is has is known as the _______.

• atomic emission spectrum.

• atomic suppression spectrum

The different wavelengths or differences between the lines of light produce different ______.

• colors

• wavelengths

Spectroscopes use ______ to separate light into its individual colors, which have a particular wavelength.

• prisms

• guards

Spectroscopes use prisms to separate light into its individual colors, which have a particular wavelength.

It will have different outputs for different _______

• inputs

• prisms

Niels Bohr proposed the ______, where electrons moved in circular motion around the nucleus in orbits.

• atomic model

• bohr model

The Bohr Model predicts the specific frequencies of light of the atomic emission spectrum of _______.

• hydrogen

• oxygen

Bohr’s model does not work for ______ because electrons do not move as he thought.

• elements

• hydrogen

The Bohr Model

Each orbit has a fixed energy called _______.

• energy levels

• energy sub-levels