Atomic Theory
Subatomic Particles
Ions, Isotopes, and Bohr Models
Element Classes and Representative Groups
Mystery
100
Who is known as the "Father of Modern Chemistry" for being the first scientist to contribute to Atomic Theory.
John Dalton
100
Which subatomic particle is unique to each element on the periodic table?
Protons
100
If two atoms are isotopes, they will share the same number of ______ but different number of _______.
If two atoms are isotopes, they will share the same number of PROTONS but different number of NEUTRONS.
100
What are the rows and columns called in the periodic table?
rows = periods
columns = groups
100
Which subatomic particle has the smallest mass?
electrons
200
Which subatomic particle was discovered by James Chadwick?
Neutrons
200
Which particle(s) are found inside the nucleus of an atom?
Protons and Neutrons
200
What is the maximum number of electrons the 1st, 2nd, and 3rd energy levels can hold?
1st = 2 electrons
2nd = 8 electrons
3rd = 8 electrons
200
Which of the following elements would have properties that are somewhat metallic and somewhat nonmetallic?
A) Hydrogen (H)
B) Tellurium (Te)
C) Phosphorus (P)
D) Bismuth (Bi)
B) Tellurium (Te)
200
Who is credited for the creation of our modern periodic table?
Dmitri Mendeleev
300
This scientist was credited for discovering the first subatomic particle, the electron. His model was referred to as the "Plum Pudding Model"
JJ Thomson
300
In a neutral atom, which 2 particles will always equal each other?
protons and electrons
300
How does an ion get a charge?
By gaining or losing electrons
300
Which 2 families on the periodic table are the most reactive? (write their names)
Alkali Metals and Halogens
300
This element is the most abundant metal in the earth's crust.
Aluminum (Al)
400
Studied the location and behavior of electrons. Created the "Planetary Model" of an atom.
Niels Bohr
400
How do we calculate the mass of an atom?
Mass Number = # protons + # neutrons
400
Draw a Bohr Model of Magnesium
400
How can you tell whether 2 elements will share similar characteristics/properties?
Elements that are located within the same family on the periodic table share the same number of valence electrons and have similar properties.
400
An isotope has 53 protons, 35 neutrons, and 53 electrons.
How would we write the name of this isotope?
Iodine-88
500
What was Ernest Rutherford's main contribution to Atomic Theory?
Discovered that atoms have a dense, positive center he called the nucleus.
Proposed the "Nuclear Model" of the atom
500
How many protons, neutrons, and electrons will this atom have?
Atomic Number = 26
Mass Number = 56
Protons = 26
Neutrons = 30 (56-26)
Electrons = 26
500
How many protons and electrons will the ion S-2 have?
Protons = 16
Electrons = 18
500
Explain why Noble Gases are the least reactive elements on the periodic table.
These elements have a full outer shell of valence electrons. Do not seek to share, lose, or gain any additional electrons.
500
What does the electron cloud model represent?
Most likely location of electrons in an atom.