Atomic Structure 101
What are the 2 regions of an atom? NEED BOTH
Nucleus and Electron Cloud
What 2 things can you find within the nucleus? NEED BOTH
Protons and Neutrons
When looking at a Bohr model diagram of an atom, where do the electrons get placed?
Electron cloud (Shell, Electron rings, etc.)
When drawing an atomic diagram, how many electrons can be placed on that 1st outer shell?
2
True or false? The atomic mass of an element is the average of all isotopes.
True
What does "amu" stand for?
Atomic Mass Unit
What is a negatively charged ion called?
Anion
What are the 3 parts to an atom and what are their charges? NEED ALL CORRECT
Proton - Positive
Neutron - Neutral
Electron - Negative
What is the model called that shows a visual representation of particle arrangements?
MUST PRONOUNCE CORRECTLY
Bohr Model
Are most atoms positive, neutral, or negative?
Neutral
This subatomic particle has relatively NO MASS
Electron
An "ion" is a charged atom or molecule....What is the difference between a "Cation" and an "Anion"?
Cation is positive, Anion is negative
On the 3rd ring of the Bohr model, how many electrons can be placed?
8
Magnesium has a mass # of 24 and an atomic # of 12
Come up to the board and draw a diagram representing all parts of this element
Answers may vary
How many outer shells are allowed surrounding a nucleus? What's the limit?
No Limit
An ion is a charged atom or molecule. What is a positively charged ion called?
MUST PRONOUNCE CORRECTLY
Cation
Atoms of the same element, but have a different number of neutrons, causing different mass numbers are referred to as ________________.
Isotopes
9
Draw a Bohr model on the white board of Lithium which has an atomic #3 and an atomic mass # 6.941
Answer will vary
How many elements are there on the periodic table?
118
How do we name an isotope?
Based on its mass number
How do we find out the number of neutrons in an atom?
# of neutrons= Mass # - Atomic #
How many protons and electrons are on the Bohr model Mr. P has drawn on the board?
P= 6 and E=6
Oxygen has an Atomic # 8 and an atomic mass of 15.999. Draw a Bohr model on the white board showing all parts. Extended time allowed.
Answers will vary
What element is represented by the letter K?
Potassium