Atomic Theory

First person to propose the concept of an atom

• Rutherford

• Democritus

• Dalton

• Bohr

This particle balances the charges from the protons to make the atom neutral

• proton

• electron

• neutron

• nucleus

These particles are found in the nucleus

• protons and electrons

• nucleus and neutrons

• protons and neutrons

• electrons and neutrons

Tags

NGSS.HS-PS1-8

Thomson Experimented with ______

• Gold Foil

• alpha particles

• cathode rays

• protons

Which Scientist created this model

• Democritus

• Chadwick

• Bohr

• Rutherford

Which scientist developed the atomic theory

• Aristotle
• Dalton
• Democritus

The smallest unit of a pure substance that has the properties of that substance

• element
• atom
• neutron
• compound

Atoms are made up of three basic parts, which are -

• Protons, neutrons, electrons
• neutrinos, protons, neutrons
• quarks, protons, electrons
• electrons, neutrons, and quarks

Tags

NGSS.MS-PS1-1

Protons have this charge -

• positive
• negative
• neutral
• no charge

Electrons have this charge - 

• positive
• negative
• neutral
• no charge

Tags

NGSS.MS-PS2-3