Atomic Scientists

Which scientist discovered that atoms combine in fixed ratios to form compounds?

• JJ Thomson

• Ernest Rutherford

• John Dalton

• James Chadwick

JJ Thomson's theory was nicknamed _______.

• Billiard Ball Theory
• Solar System Theory
• Electron Cloud
• Plum Pudding

The Billiard Ball is the nickname for ________ theory.

• Dalton
• Neils Bohr
• JJ Thomson
• Ernest Rutherford

Tags

NGSS.HS-PS1-7

Electron cloud is based on

• Quantum Mechanics
• Gold Foil Experiment
• Matter is made up of small particles called atoms
• Nuclear Theory

Who discovered the proton?

• Thomson
• Dalton
• Bohr
• Rutherford

He developed the model of the atom which had specific energy levels for electrons

• Rutherford

• Bohr

• Chadwick

• Dalton

James Chadwick discovered the ________.

• proton
• neutron
• electron
• nucleus

Tags

NGSS.HS-PS1-8

Who believed that all matter is made up of small particles called atoms?

• Dalton
• Rutherford
• Bohr
• Chadwick

Tags

NGSS.HS-PS1-7

What did Thomson discover?

• electron
• proton
• neutron
• electron cloud

What does this image represent?

• Billiard Ball Model
• Plum Pudding
• Gold Foil
• Solar System Model