Atoms
What are the three key components of atoms ?
protons, electrons, and neutrons
What does Average Atomic Mass apply to? (Atoms, Ions, or Isotopes)
Isotopes
What is an Isotope?
What are Ions?
Atoms with unequal protons and electrons
true or false atoms are the fundamental building blocks of all matter.
true
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?
The number of ____ atom has determines the identity of a specific element
protons
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)
Atoms are made 99.9 % of ____
empty space
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 abundant element in the universe ? Hint* it makes up 74% of mass in the universe
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