Atomic Theory
This particle is the smallest in the atom.
What is the electron?
A greek philosopher who is the father of modern atomic thought.
Who is Democritus?
The periodic table is an organized list of these.
What are elements?
This elements has 7 protons and neutrons and symbol is N?
What is Nitrogen?
These particles make up the nucleus of an atom.
What are the protons and neutrons?
John Dalton theory had 4 statements.
1. Atoms are tiny, invisible particles.
2. Atoms of one element are all the same.
3. Atoms of different elements are different.
4. Compounds form by combining atoms.
This is the particle in the atom with a negative charge.
What is an electron?
The element symbol is Ca and is the 20th element in the periodic table.
What is Calcium?
This Greek word, meaning "uncuttable" is where we get the modern day word atom.
What atomos?
He created electrons and his model was known "Plum Pudding."
Who is JJ Thomson?
This man created the basis of the periodic table.
Who is Mendeleev?
This element is the 12th on the periodic table and symbol is Mg.
What is Magnesium?
This scientist determined that electrons had a specific and structured orbit based on energy levels.
Who is Bohr?
Showed that atoms have a (+) particles in the center, and are mostly empty space.
Who is Rutherford?
This is the atomic mass of an atom.
What is the average mass of all isotopes of an element?
This element symbol is Na.
What is Sodium?
Rutherford used this to discover the nucleus of an atom
What is the gold foil experiment?
Working with Rutherford he discovered particles with no charge. He called these particles neutrons.
Who is James Chadwick?
This element is the smallest and 1st on the periodic table.
What is hydrogen?
This element has 8 protons and atomic mass of 15.
What is Oxygen?