Atomic Structure
This is the smallest part of an element.
Atom
What direction do a group and period go on the Periodic Table?
Draw and label each.
Group (Vertically, Up and Down)
Period (Horizontally, Left to Right)
The heaviest part of an atom is the electron cloud. True or False.
False
Neutrons are located outside of the nucleus. True or False?
False
What subatomic particle identifies an element?
Protons
Write the name of each subatomic particle and their mass.
Proton - 1 AMU
Neutron - 1 AMU
Electron - 0 AMU
Protons and neutrons are about the same size. True or False?
True
What are the three groups of elements?
Metal
Metalloid
Nonmetal
What does the period number tell you?
The number of energy levels.
The overall charge of an atom.
Positive.
The group number tells you what about an atom?
(Two answers needed)
The number of valence electrons and reactivity.
List where metals, nonmetals, and metalloids are located.
Metal - left and middle
Nonmetal - right
Metalloid - staircase
Write the names of the subatomic particles AND their charges.
Electron - Negative
Neutron - Neutral / 0
Proton - Positive
What are three characteristics of a metal?
Shiny, good conductors of heat and electricity, malleable and ductile.
How do you calculate neutrons?
Round the atomic mass to the nearest whole number and subtract the atomic number from the mass