Greek philosopher who thought matter could not be divided and divided forever. Eventually there would be the "smallest particle." He named it "atomos."
Who is Democritus?
100
What are the 3 subatomic particles?
Protons, neutrons, and electrons
100
Two atoms of the same element with different mass numbers
What is an isotope?
100
Which subatomic particle is gained or lost in order for an atom to become an ion?
electrons
100
The study of matter and the changes it undergoes
What is the definition of chemistry?
200
Considered the father of atomic theory. Theorized that atoms are like billiard balls or bowling balls.
Who is John Dalton?
200
This subatomic particle has a postive charge.
What are protons?
200
This is the reason the mass is different in an isotope.
What is the number of neutrons?
200
If an element has 10 protons and 8 electrons, what is its charge?
What is +2?
200
Must have mass and volume.
What is matter?
300
person associated with discovering electrons
Who is JJ Thomson.
300
This subatomic particle is neutral and located in the nucleus.
What are nuetrons.
300
In Carbon-14, what the 14 represents.
What is the mass number?
300
An element that has 12 electrons, 10 neutrons, and 11 protons, has what charge?
What is -1?
300
December 25th
What is Christmas?
400
His gold foil experiment proved there was a small, dense positively charged center of an atom called the nucleus.
Who is Ernest Rutherford?
400
Calculated by adding your protons plus neutrons.
What is atomic mass?
400
Calculate the number of neutrons in Boron-11
6
400
Another name for a positive ion.
What is a cation?
400
Two Catagories: Physical Science and Biological Science
What are the two catagories that the sciences were previously divided into?
500
This person's model of the atom was known as the plum pudding model.
Who is JJ Thomson
500
What happens to the energy of an electron as it moves into orbitals that are farther away from the nucleus?