A subatomic particle with a positive charge that is found in the nucleus.
What is proton
100
His model of the atom was a positively charged sphere with negative electrons randomly orbiting the center. This model was made up of mostly empty space.
Who is Ernest Rutherford
100
Represents the number of protons in the nucleus of that particular element.
What is the atomic number
100
The amount of space an object occupies.
What is volume
200
A subatomic particle with a negative charge that is found outside the nucleus.
What is electron
200
Explained that atoms were too small to see and that atoms of different elements had different masses.
Who is John Dalton
200
Represents the number of protons and neutrons present in the nucleus of an atom
What is mass number or atomic mass
200
The amount of matter in an object
What is mass
300
A subatomic particle with a neutral charge that is found in the nucleus of an atom.
What is neutron
300
Individual atoms were thought of a positively charged spheres with negatively charged electrons orbiting in specific shells.
Who is Niels Bohr
300
H
What is the chemical symbol for Hydrogen.
300
The result of mass divided by volume
What is density
400
Individual atoms were thought of as positively charged spheres with negatively charged electrons embedded in it.
Who is JJ Thomson
400
A one or two letter symbol representing an element on the Periodic Table
What is a chemical symbol
400
A measurement of the gravitational pull on an object.
What is weight
500
This region is responsible for most of the atom's volume.
What is electron cloud
500
British school teacher credited with proposing the first atomic theory.
Who is John Dalton
500
Elements are arranged by this number.
What is atomic number
500
A measure of the average kinetic energy of particles in a substance.