Spectra Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

what is lowest energy level called

A

ground state

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is it called when an electron moves higher

A

excited state

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

how does an electron move higher

A

absorbs energy in form of photon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

how does an electron get rid of its energy

A

releasing a photon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

equation to work out frequency of emitted photon

A

f= change in E / h

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

how to work out change in energy

A

where you start - where you end

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

emission spectrum

A

lines of colour in a continuous spectrum associated with a particular electron transition between two energy levels in an atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

absorption spectrum

A

black lines in a continuous spectrum caused when the vapour of an element absorbs particular photons of light.
The photons absorbed have exactly the same energy as energy gaps in the energy level within the atom of the element.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Bohr model of the atom

A

central positive nucleus and electrons in definite energy levels surrounding the nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is an energy level

A

an electron orbit in the Bohr atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

ionisation energy

A

the energy level at which an electron escapes from the electric field of the nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what does the sun emit?

A

all visible wavelengths of light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what does the gas in the sun’s upper atmosphere do?

A

absorbs photons of these wavelengths

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

fraunhofer lines

A

dark lines of the sun’s absorption spectrum which can be used to identify elements present in the sun’s outer atmosphere.
named after the German physicist who identified them

How well did you know this?
1
Not at all
2
3
4
5
Perfectly