Basic ideas about atoms

Question 1

Name the waves in the electromagnetic spectrum.

Answer 1

Gamma, x-ray, UV, visible, infrared, microwave, radio.

Question 2

What is the highest frequency wave in the EM spectrum?

Answer 2

Gamma.

Question 3

What is the lowest frequency wave in the EM spectrum?

Answer 3

Radio.

Question 4

What is the equation for the speed of light?

Answer 4

wavelength X frequency = speed of light

Question 5

What is the relationship between the energy and wavelength of the light?

Answer 5

Plancks constant

Question 6

What is the equation involving Plancks constant?

Answer 6

Plancks constant X frequency = energy

where plancks constant = 6.63x10^-34 J s

Question 7

What colour are calcium ions?

Answer 7

Brick red.

Question 8

What colour are strontium ions?

Answer 8

Crimson.

Question 9

What generally happens when electrons change state and gain energy?

Answer 9

The electrons get promoted to reach an excited state which allows them to reach a higher energy level. When the energy is then taken away, the electron falls back to a lower energy level (not always the starting one). As the electron loses energy it releases photons of energy.

Question 10

What light is produced as the electron has reduced energy?

Answer 10

Quantised light.

Question 11

What is the emission spectrum?

Answer 11

Is the spectrum of which