Parts of an Atom
This part of an atom has a positive charge.
Proton
Human beings breathe in this element and release CO2 gas.
O2
Rows moving horizontally in the Periodic Table are known as?
Periods or Eras
What is the first element in Period 2 of the Periodic Table?
Lithium
Who was the Periodic Table made for in terms of usage?
Everyone
This part of an atom circles the nucleus and has a negative charge.
Electron
% of Nitrogen that makes up the atmosphere surrounding Earth
78%
Columns in the Periodic Table are known as?
Families or Groups
Flourine
What famous scientist discovered missing elements and interpreted their values before they were even discovered?
Dmitri Mendeleev
This particle is found in the nucleus but has no charge at all.
Neutron
This element we said was unique or different because it did not have any neutrons.
Hydrogen
The atomic # of an element is also the number of ___________ it contains?
Protons
What element is found in period 3, family 2?
Magnesium
What all can be found using the Periodic Table?
atomic #/symbol
atomic mass
protons
neutrons
valence electrons
The densely packed area in the center of an atom, which contains the protons and neutrons.
Nucleus
This is the organic molecule that all living things must have in order for life to be present.
Carbon
A symbol for an element can be how many letters?
one, two, or three
What element is in period 3 family 16?
Sulfur
What is the name of the rule for making molecules? What number of outer electrons do they need to be "happy"?
The Octet Rule
The place surrounding the nucleus where we find our electrons.
Orbit or shells
Long molecules that take the shape on long chains often used in making clothing are known as?
Polymers
Explain how to find neutrons using the Periodic Table.
subtract atomic # from the atomic mass
What element is in period 2, family 14?
Carbon
What element did Mr. Stemple say is the biggest thief in the Periodic Table?
Flourine