Early Atomic Theory
Structure of the Atom
Atomic Masses
Molar Mass
Modern Atomic Theory
100
Early Greek Philosopher who said the universe is made of tiny indivisible particles called________
Who is Democritus and atomos
100
This subatomic particle has a positive charge
What is a proton
100
amu or u
What is an atomic unified mass
100
Hydrogen has an amu of 1.0, how many g/mol is that
What is 1.01 g/mol
100
Described the energy of an electron is based on its path around an atom...
Who is Bohr
200
Based his early ideas on atoms on experimental evidence
Who is Dalton
200
This subatomic particle has no charge but can occur in different amounts
What is the neutron
200
Like a dozen (12) or a pair (2) a mole represents
What is 6.02 x 10 to the 23 rd
200
Iron has an atomic mass of 5.50 u what is it g/mol
What is 5.50 g/mol
200
A region with a high probability of an electron being present is
What is an orbital
300
Developed the plum pudding model to describe ________ placement in an atom
Who is Thomson and electrons
300
These are so small they do not count in the mass of the atom
What is the electron
300
The mole is also named for the person who came up with the calculation
Who is Amadeo Avogadro
300
Water has the formula H20 How many hydrogen's are in the compound?
What is 2
300
The # of electrons in the outer most energy level of an atom
What is valence electrons
400
This area of an atom was discovered by Rutherford
What is the nucleus
400
When the number of neutrons and protons differ giving different atomic masses.
What is an isotope
400
Which would weigh more 2 moles of elephants or 2 moles of mice
What is elephants
400
Methane has a formula of CH4, What is the atomic mass?
What is 12 +1 + 1+1 +1 =16 u or g/mol
400
Number of valence electrons in Na
What is 1
500
In Rutherford's model the _______ and the ______ are in the center and the ______ orbit.
What is protons, neutrons electrons
500
This atom has a mass of 200, its atomic number is 80. How many neutrons does it have?
What is 120
500
If you have 5 moles of carbon how much do you have
What is 30.10 x 10 23rd
500
Glucose has a formula of 6 carbon, 12 hydrogen and 6 oxygen. What is the atomic mass of glucose?
What is 72 + 12 + 96 =180 u or g/mol
500
Number of valence electrons in carbon
What is 4
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