Models of the Atom Subatomic Particles States of an Atom Average Atomic Mass Electron Configuration/Sublevel Notation
10
What is the Bohr Model?
In this model, the atom is composed of a positive proton and a neutron, surrounded by electrons in a specific orbit.
10
What is an electron?
A subatomic Particle with a negative charge and is lighter in mass than the other two subatomic particles.
10
What is absorbing energy?
When an electron jumps from the ground state to an excited state, it is said to _____________ _____________.
10
What is an isotope?
Atoms of an element that contain the same number of protons but a different number of neutrons.
100
100
20
What is the Wave Mechanical Model?
In this model, electrons are found in a wavelike orbital at specific energy levels - probably location of electrons.
20
What is an a neutron?
A subatomic particle with no charge.
20
What is an excited state?
An electron is in a/an _________________ state when it it jumps from n=1 to n=2.
20
(%abundance x mass of 1st isotope) + (%abundance x mass of 2nd isotope) +...
When finding an average atomic mass, one must....
200
200
30
What is the Rutherford Model?
In this model, through the Gold Foil Experiment, it was found that there is a positive center with scattered electrons.
30
What is a proton and a neutron?
These two subatomic particles are similar in mass but have different charges.
30
What is a ground state?
An electron is in a/an _________________ state when it it falls from n=5 to n=4.
30
What is Carbon?
C -14, C-13, and C-12 are all isotopes of ___________________.
300
300
40
What is the Plum Pudding Model?
In this model, the atom has a positive charge with a few random electrons.
40
What is mass?
By adding the protons and neutrons of an atom, you find the value of its _________________.
40
Answers will vary.
The energy of an electron is emitted when it moves from ____________ to _______________. (Give an example)
40
What is a core electron?
The electrons found closest to the nucleus.
400
400
50
What is the Wave mechanical Model?
In this model, there are 4 type of specific orbitals (s, p, d, f)
50
What is an atomic number?
The number of protons is similar to an atom's ______________ ________________.
50
What is a valence electron?
The outermost electrons in an atom.
50
Answers will vary.
Magnesium occurs in nature in three isotopic forms:
Mg - 24 (78.70%), Mg-26 (11.17% abundance) and Mg - 25 (10.13 %). Set up the numeral calculation.
500
500






Atomic Concepts - Unit 1

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