Atomic Discoveries
This was the first "modern" scientist to come up with an atomic theory
Who is John Dalton?
Discovered the neutron which has mass but no charge.
Who is Chadwick?
What is -1?
The weighted average of all the isotopes of that element
What is the average atomic mass.
8035Br has how many neutrons?
What is 45?
Ions with a positive charge are called
What are cations?
These types of elements make-up most of the periodic table.
What are metals?
This person discovered the dense, positive nucleus
Who is Rutherford
Rutherford used this along with alpha particles to discover the nucleus
What is gold foil?
The location of protons in an atom.
What is the nucleus?
Based on the mass on the periodic table, this isotope for Neon is most abundant. (20.18)
What is Neon-20?
The mass of an atom with 10 protons, 9 neutrons and 10 electrons
What is 19?
How the charge of an atom is calculated.
What is p-e?
Atomic number for the element found in group 9 period 4.
What is 27?
The cathode ray is made of this subatomic particle.
What is the electron?
Ancient Greek philosopher who thought all matter was made of tiny particles he called "atomos"
Who is Democritus?
The way to calculate the mass number.
What is atomic number + neutrons?
protons + neutrons = ?
What is the mass number?
The number of protons in an element with a mass of 152 and 89 neutrons
What is 63?
A sulfur ion has 18 electrons, what is its charge?
What is 2- ?
Three properties of metals
What are good conductors, malleable, ductile or lustrous?
This person observed a ray of particles traveling opposite to the cathode ray, with positive charge.
Who is Eugen Goldstein?
This person had several theories about atoms, like that they were indestructible spheres. Some of his theories were later disproven by others
Who is Dalton?
The mass of the neutron or proton.
What is 1 amu?
Argon has the most abundant isotope with a mass of this number. Argon-36, Argon-38 or Argon-40
What is 40?
The # of neutrons in an atom of 136Carbon
What is 7?
Mg has a charge of 2+. How many electrons does it have?
What is 10?
Period and Group for Aluminum
What are period 3 and group 13?
This man discovered the electron
Who is JJ Thomson?
The name of Thomson's model for the atom-an English dessert.
What is "plum pudding"
The location of electrons
What is shells/orbitals/energy levels/around the nucleus?
************ Daily Double ***********
The average atomic mass of element X that has isotopes of 58 amu (36% abundance) and 60 amu (64% abundance), reported to two decimal places.
What is 59.28?
The mass of an isotope of Hydrogen (atomic #1) with 2 neutrons.
What is 3?
Name three elements that do not form ions
He, Ne, Ar, Kr, Xe or Rn
Most reactive elements are found in these 2 columns
What are columns 1 and 17?