Looking into atoms

The term "atom" comes from the Greek word for

• indivisible

• uncuttable

• indestructible

• atomos

Atoms were created after the Big Bang 13.7 billion years ago.

• True

• False

Discovered the nucleus in 1911

• J.J Thomson

• John Dalton

• Erwin Schrodinger

• Ernest Rutherford

The nucleus is held together by the...

• Strong Force

• Weak force

• Gravity force

• Electromagnetic force

positively charged particles found within atomic nuclei.

• protons

• neutrons

• electrons

• quarks

The number of protons in an atom is unique to each element

• True

• False

Is referred to as the atomic number of an element.

• Number of protons

• Number of electrons

• Number of neutrons

Quarks are held together by other subatomic particles called...

• Gluons

• Photons

• Higgs

• Muons

Developed the theory that protons and neutrons are maded up of smaller particles called "quarks"

• Murray Gell-Mann

• George Zweig

• Werner Heisenberg

• Niels Bohr

Protons and neutrons are made up of "up" and "down" quarks.

• True

• False