Chem 1 Atoms Theories Content Quiz 1

All matter is made of what?

• energy 
• atoms 
• electrons 
• compounds 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Who proposed the first atomic view of matter?

• Lavoisier
• Empedocles
• Democritus
• Priestley

Atom comes from the word atomos, meaning

• microscopic
• elemental
• indivisible
• molecular

Democritus and Dalton did NOT know/believe that

• atoms are indivisible and indestructible

• all matter is made of atoms

• atoms can combine to form compounds

• the atom is made up of smaller particles

What scientist is best known for his "Plum Pudding" model of the atom?

• J.J. Thomson

• Ernest Rutherford

• John Dalton

• Democritus

Discovered the electron within the atom

• Thomson
• Chadwick 
• Schrodinger & Heisenberg
• Dalton

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.
• alpha particles have a positive charge.
• gold is not a dense as previously thought.
• there is a dense positively charged nucleus at the center of an atom.

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

• True
• False

What type of particles exist within an atomic nucleus?

• Protons and Neutrons
• Neutrons and electrons
• Neutrons and Atoms
• Elements and Atoms

Tags

NGSS.HS-PS1-8

What can be found outside the nucleus? MULTI-SELECT 3 !

• electrons

• negative charge

• orbitals

• positive charge

• protons