Atomic Discoveries
This was the first "modern" scientist to come up with an atomic theory
Who is John Dalton?
What is -1?
8035Br has how many neutrons?
What is 45?
Electorns that are found on the last orbin are known as
Who is Valence Electron?
What is a proton.
This person discovered the dense, positive nucleus
Who is Rutherford
The location of protons in an atom.
What is the nucleus?
The mass of an atom with 10 protons and 9 neutrons
What is 19?
When an atom loses an electron, it becomes ..... with ... charge
What is cation with positive (+) charge?
The charge of a proton is
What is positive (+) charge
This person identified that electrons have specific energy levels or orbits that they are organized into
Who is Bohr?
The way to calculate the mass number.
What is atomic number + neutrons?
Atoms that contain same number of protons but different mass number are known as
What is Isotopes?
When an atom gains an electron, it becomes ..... with ... charge
What is Anion with a negative (-) charge
protons + neutrons = ?
What is the mass number?
This person observed a ray of particles with very small mass and a negative charge
Who is Thomson?
The mass of the neutron or proton.
What is 1 amu?
The # of neutrons in an atom of 136Carbon
What is 7?
Diagram that only shows valence electrons is known as
What is Lewis Dot diagram?
The number of protons in an element with a mass of 152 and 89 neutrons
What is 63?
Ancient Greek philosopher who thought all matter was made of tiny particles he called "atomos"
Who is Democritus?
The location of electrons
What is shells/orbitals/energy levels/around the nucleus?
Daily Double: Calculate the average mass of of a chlorine which contains 75% of Cl-35 and 25% of Cl-37?
What is 35.5 amu?
The cathode ray is made of this subatomic particle.
What is electrons?
Daily Double: The number of protons help us determine
What is atomic number or number of electrons in a stable atom?