Atomic Emision Spectra

Question 1

What is electromagnetic radiation

Answer 1

Energy that transmitted as waves with a spectrum of different frequency

Question 2

What happens to electrons when they take in energy from their surroundings

Answer 2

They move further from the nucleus and are in a higher energy level so the electrons are said to be excited

Question 3

How do electrons release energy and what type of values do energy levels have

Answer 3

Dropping from a high energy level down to a low energy level
They have fixed value

Question 4

What does a line spectrum show

Answer 4

Shows the frequency of light emitted when electrons drop from high energy level to a lower one

Question 5

What does different electron arrangement mean

Answer 5

It means the frequency of radiation absorbed and emitted are different so the spectrum for each element is unique

Question 6

What is the emission spectra made up of and what do they represent

Answer 6

Sets of lines which represent electrons moving to a different energy level

Question 7

What happens to the sets of lines when the frequency increases

Answer 7

The sets of lines get closer together

Question 8

What are the 4 basic principles to electron shells

Answer 8

-Electrons can only exist in fixed orbits or shells not anywhere in between
-Each shell has fixed energy
-When electrons move between shells electron magnetic radiation is emitted or absorbed
- Energy levels are fixed so radiation will have fixed frequency

Question 9

What supports the idea that energy levels are discrete

Answer 9

The emission spectrum has clear lines for different energy levels
This means that electrons don’t move from one energy to the next instead it jumps with no in between stage