Subatomic Particles
Positively charged particle
Proton
Created the "Plum Pudding Model" of an atom
Thomson
Formula for Density
Mass/Volume
Anything that has mass and takes up space
Matter
A=P=E stands for what?
Atomic # = # of Protons = # of Electrons
Neutral particle with no charge
Neutron
Stated that atoms are mostly empty space
Rutherford
Measurement of the amount of matter in a specific volume
Density
The smallest particle of an element; made of electrons, protons, and neutrons
Atom
M-A=N stands for what?
Mass Number - Atomic Number = # of Neutrons
Negatively charged particle
Electron
Created the planetary model of the atom- where the nucleus represents the sun and the electrons represent the planets
Bohr
Measurement of the amount of space an object takes up
Volume
What particles are located in the nucleus?
Protons and Neutrons
What element has 6 protons?
Carbon
Small, dense, positively charged center of an atom
Nucleus
First to discover the presence of a negative particle in an atom
Thomson
Units of measurement for Density
g/cm3 OR g/mL
What particles are located outside of the nucleus?
Electrons
How many protons does an atom of Bromine have?
35 Protons
Energy levels with a negative charge surrounding the nucleus
Electron Cloud
Determined that electrons move around the nucleus in energy levels
Bohr
How do you find the volume of an object using a ruler?
V(cm3)=l(cm)*w(cm)*h(cm)
The number of what particle determines an elements identity?
Proton
How many neutrons does an atom of Oxygen have?
8 Neutrons