EMR

Question 1

What is EMR

Answer 1

Electromagnetic radiation are continuous waves that move through space. They all move at the speed of light.

Question 2

Relationship between speed and wavelength in EMR

Answer 2

c = f λ

f = c / λfrequency

Question 3

The energy of Electromagnetic waves is described by what equation

Answer 3

E = energy
H = Plancks constantl 6 x 10 -34 Js

E = h f
E α f

E = hc / λ
E α 1/λ

Question 4

Joules per particle formula

Answer 4

E = hc / λ

Question 5

Energy per mole

Answer 5

E = hc.AV/λ

Question 6

What unit measures wavelength, speed of light, frequency?

Answer 6

Wavelength in metres
Speed in metres per second
Frequency in hertz

Question 7

What is UV vis radiation?

Answer 7

The visible and ultraviolet regions of the EM spectrum

Between 10 and 780 nm

Question 8

Gamma radiation

Answer 8

High frequency
High energy
Short wavelength

Question 9

When white light shines on or through a substance

Answer 9

some of the light is absorbed by the substance, and the remaining wavelengths transmitted

eg, Copper Sulphate solution absorbs orange light but appears blue

Question 10

What is the colour of a substance and the depth of the colour of a substance depend on?

Answer 10

Colour is dependant on wavelength

Depth of colour depends on concentration