Atoms & The Atomic Theory

He developed the planetary model of the atom.

• Rutherford
• Bohr
• Chadwick
• Dalton

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

What did Thomson discover?

• electron
• proton
• neutron
• electron cloud

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Where electrons are likely to be found as they travel around the nucleus

• Nucleus
• Electron Cloud
• Within a Proton
• Within a Neutron

He claimed that matter was made of small, hard particles that he called “atomos.”

• Democritis

• Dalton

• Moseley

• Einstein

Subatomic particles that are neutral in charge

• Neutrons
• Protons
• Nucleus 
• Electrons

"Everything is composed of atoms" was stated by:

• Democritis
• Dalton
• Moseley
• Einstein

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