Atomic Theorist

Particles found in the nucleus of an atom that have no charge

• protons

• quarks

• electrrons

• neutrons

Tags

NGSS.HS-PS1-8

Positively charged particles located in the nucleus of an atom

• protons

• quarks

• electrrons

• neutrons

Tags

NGSS.HS-PS1-8

The center of an atom.

• energy level

• ring

• nucleus

• electron cloud

Tags

NGSS.HS-PS1-8

In Rutherford's famous "Gold Foil" experiment, some particles passed through the foil, some were deflected, and some were bounced straight back. This observation made Rutherford conclude

• gold atoms have a solid nucleus

• gold atoms can conduct electricity

• gold atoms are denser than other metals

• gold's elections orbit the nucleus at definite distances from the center

One important difference between Bohr's model and the modern on is that electrons in the modern model are

• moving in fixed orbits around the nucleus

• moving in an electron cloud

• moving in a random motion around the nucleus

• not moving

In Thomson's plum pudding model, the plums represent

• protons

• neutrons

• the nucleus

• electrons

Tags

NGSS.MS-PS1-1

Who's model does this represent?

• Dalton 1903-1808

• Rutherford 1911

• Thomson 1897

• Bohr 1913

Who first had evidence of the atom?

• Bohr

• Dalton

• Rutherford

• Thompson

Who discovered the electron?

• Bohr

• Dalton

• Rutherford

• Thompson

Who was it that developed the rules of chemical reactions and explained that compounds are produced by different combinations of elements?

• John Dalton

• Isaac Newton

• Galileo Galilei

• Albert Einstein