Vocabulary
atoms of the same element that possess different numbers of neutrons
isotopes
Positively charged particles
Protons
Identify the element:
C
Carbon
Group 18
Noble Gasses
S
Sulfer
an atom of molecule that has gained or lost one or more electron
ion
atomic particles with no charge
neutrons
The first element
Hydrogen
Located in the "staircase"
Metalloids
Na
Sodium
equal to the number of protons in an atom's nucleus
atomic number
Negatively charged atomic particles
electrons
Has 8 protons
Oxygen
Groups 3-12
Transition Metals
Li
Lithium
Horizontal rows on the periodic table
Periods
regions of probability in which electrons are most likely located
electron cloud
K
Potassium
Group 1
Alkali Metals
Ca
Calcium
Vertical columns on the periodic table
Groups or families
Location of protons and neutrons
nucleus
18
Argon
Father of the periodic table
Dmitri Mendeleev
B
Boron