Atoms and Atomic Theory

"Everything is composed of atoms" was stated by:

• Democritis
• Dalton
• Moseley
• Einstein

Tags

NGSS.MS-PS1-1

The scientist responsible for "discovering" the nucleus is:

• Bohr
• Rutherford
• Schroedinger
• Einstein

The nucleus of an atom can be described as:

• spacious and negatively charged
• dense and positively charged
• spacious and positively charged
• dense and negatively charged

Tags

NGSS.HS-PS1-8

Electrons are not factored into atomic mass because:

• They are so small their mass is negligible
• They're not in the nucleus
• They're too big
• They move so quickly their mass is zero

How did Rutherford discover the proton?

• Cathode tube ray experiment
• Gold Foil Experiment
• Planetary Model
• Plum Pudding Model

Tags

NGSS.HS-PS1-8

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

Tags

NGSS.HS-PS1-8

True or False: The majority of an atom is made up of empty space

• True
• False

Tags

NGSS.MS-PS1-1

What scientist is best known for his "Chocolate Chip" model of the atom?

• J.J. Thomson
• Ernest Rutherford
• John Dalton
• Democritus

JJ Thomson discovered what subatomic particle

• nucleus

• neutron

• proton

• electron

Rutherford discovered what part of the atom

• nucleus

• neutron

• proton

• electron