Role Credits
Who was "the laughing philosopher"?
Democritus
What did Democritus envision cutting into pieces until he couldn't cut anymore?
Cheese
The central core of the atom is called...
The nucleus.
Define atom.
The basic building block of all matter.
What was so cool about the flames at the very beginning of the video?
They burned different colors.
Whom can we credit for naming the electron?
JJ Thomson
What is one thing the modern understanding of science and Democritus's theory have in common?
The motion of atoms.
The atom as the smallest building block, or unit, of matter.
The nucleus contains the...
Define element.
A pure substance that cannot be further broken down into other substances by chemical or physical means.
Name two gases that are lighter than air.
Hydrogen, helium, methane, nitrogen, neon...
Who proved the atom was mostly empty space?
Earnest Rutherford
What is one thing Democritus got wrong?
The atom is divisible via nuclear fission.
Neutrons have a _____ charge.
Define molecule.
Two or more atoms joined together by covalent bonds.
DOUBLE JEOPARDY!
Name the three subatomic particles of the atom.
Describe the structure of these particles.
Proton, neutron, electron.
Protons and neutrons in the core nucleus with electrons orbiting around it.
Who discovered the neutron?
James Chadwick
The philosopher responsible for this concept originated from...
Greece
Electrons have a ________ charge.
negative
Define compound.
Two or more DIFFERENT elements joined together through chemical bounds.
Name two careers one who is interested in studying atoms and molecules might have.
Chemist, Biochemist, Physicist, Astrophysicist, Nuclear Engineer...
Describe the experiment that was used to prove that atoms were mostly empty space.
Gold sheet, radiation, etc...
The concept of the atom first dawned on Democritus in...
440BC
DOUBLE JEOPARDY!
Name the charge of the proton.
What depends on the number of protons? What changes if that number goes up or down?
The identity of the atom/element.
Define matter.
Anything that has mass and takes up space/volume.
What kind of microscope is powerful enough to reveal the atomic level?
The Scanning Tunneling Microscope.