Reading the Periodic Table
Subatomic Particles
Bohr Models
Metals Nonmetals. Metalloids
Representative Groups
100
How are elements organized on the periodic table?
By atomic number/number of protons
100
What is the charge of the 3 subatomic particles in an atom
protons = positive
neutrons = neutral
electrons = negative
100
How many electrons can fit in the 1st, 2nd, and 3rd energy levels?
1st energy level = 2 electrons
2nd energy level = 8 electrons
3rd energy level = 8 electrons
100
Which class of elements make up most of the periodic table
metals
100
How many representative groups are on the periodic table?
8
200
What do the numbers on the top and bottom of the element square represent.
Top - atomic number
bottom - atomic mass
200
Where is each subatomic particle located in an atom?
Protons and Neutrons are in the nucleus
Electrons are outside nucleus in energy levels
200
If an atom has 9 electrons, how many total energy levels will they occupy.
2 energy levels (2 in the 1st, 7 in the 2nd)
200
Which class of elements are good conductors of heat and electricity and usually solid at room temp
metals
200
What representative group is Selenium a part of?
Group 6A - Oxygen Family
300
What do we call horizontal rows on the periodic table?
How many are there?
periods
7 periods total
300
Which subatomic particle is the least massive?
Electrons
300
Which element does this Bohr Diagram represent?
Phosphorus
300
poor conductors of heat and electricity, usually a liquid or gas at room temperature
nonmetals
300
Name 3 elements in the Alkaline Earth Metals
Beryllium, Magnesium, Calcium, Strontium, Barium, Francium
400
What do we call vertical columns on the periodic table?
How many total are there?
Groups/Families
18 total
400
Which particle(s) affect the mass of an atom?
protons and neutrons
400
Draw a Bohr Diagram for Sodium (Na)
400
name 3 metalloids on the periodic table
Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium
Astatine
400
Elements in the same representative group share the same number of ___________ __________.
valence electrons
500
Who is responsible for coming up with the modern periodic table?
Dmitri Mendeleev
500
How can you determine the number of neutrons in an atom?
Mass Number - # of Protons
500
What do we call the number of electrons on the very outer energy level?
valence electrons
500
What is the only nonmetal on the left side of the table?
Hydrogen
500
Which representative group does this element belong in?
Group 7A Halogens