Atoms
what are the three key components of an atom ?
protons, neutrons, and electrons
What does Average Atomic Mass apply to? (Atoms, Ions, or Isotopes)
Isotopes
What is an Isotope?
A different forms of the same element.
What are Ions?
Atoms with unequal protons and electrons
The number of ______ determines the element for an atom.
protons
To find average atomic mass, what operation do you do to the percent abundance and mass? (add, subtract, etc.)
Multiply
Example of an Isotope
carbon-12 carbon-13
What are Cations?
True or False atoms are the fundamental building blocks of all matter.
True
When finding the average atomic mass, what two things do you need?
Mass and Percent Abundance
How do you find an Isotope?
Protons + Neutrons
What are Anions?
Ions with a negative charge(gained electrons)
what two key components of an atom make up the nucleus?
protons and neutrons
Which number do you put in decimal form when doing average atomic mass?
Percent Abundance
When was Isotopes discovered?
1913
What is Ionization?
The process of gaining or loosing electrons in order to become a charged Ion.
What is the most common atom and also the most abundant element in the universe? Hint * it makes up 74% of the universes total mass
hydrogen
Find the average atomic mass:
Chlorine-35 with an abundance of 76%
Chlorine-37 with an abundance of 24%
35.48 amu
Who discovered isotopes?
Frederick Soddy
What is the Octet rule?
When atoms settle with having less electrons than needed to fill the shell