NEW
Font size
WorksheetsEvaluate - Atomic Emission Spectrum
Total questions: 10
Worksheet time: 60secs
What can a flame test distinguish?
calcium chloride and barium chloride
calcium chloride and calcium nitrate
ethanoic acid and propanoic acid
any two metals
What is the cause of atomic spectra? Changes in the energy of ______________.
protons
neutrons
elctrons
positron
In Bohr’s, model of the atom, where are the electrons and protons located?
The electrons move around the protons, which are at the center of the atom.
The electrons and protons move throughout the atom.
The electrons occupy fixed positions around the protons, which are at the center of the atom.
The electrons and protons are located throughout the atom, but they are not free to move.
For an electron in an atom to change from the ground state to an excited state, ____________________.
energy must be emitted
energy must be absorbed
energy must be released
electron must go down to a lower level
How does the energy of an electron change when the electron moves closer to the nucleus?
It increases.
It decreases.
It remains constant.
It doubles.
What particle moves around the nucleus of an atom?
proton
neutron
electron
positron
What should happen to an electron for it to move from a lower energy level to a higher energy level?
Absorb Energy
Release Energy
Merge with a proton
Displace a neutron
What should happen to an electron for it to move from a higher energy level to a lower energy level?
Absorb Energy
Release Energy
Merge with a proton
Displace a neutron
Who was the Danish physicist who explained how different elements emit different spectral colors?
James Chadwick
Neils Bohr
J.J. Thomson
John Dalton
What was the model used to explain the phenomena described in the emission of different spectral colors?
Plum Pudding Model
Nuclear Model
Solid Sphere Model
Hydrogen Atom Model
