The electron cloud model is a 3-d model

• True

• False

The electron cloud model shows that you cannot predict the path of an ______________ as they orbit the nucleus and jump between orbitals in a 3-dimensional pattern.

• protons

• neutrons

• electrons

• nucleus

What subatomic particles make up the nucleus of an atom? (Pick 2 particles)

• electrons

• Protons

• mesons

• molecules

• Neutrons

Tags

NGSS.HS-PS1-8

According to the latest atomic models, what do electrons do?

• They orbit around the nucleus

• They stay still inside the nucleus

• Electrons don't exist

Tags

NGSS.MS-PS1-1

What does the nucleus of an atom contain?

• Electrons & Neutrons

• Protons & Neutrons

• Neutrinos & Positrons

Tags

NGSS.HS-PS1-8

Who was the first to propose that matter consist of indivisible particle of matter called atoms?

• John Dalton

• Aristotle

• Democritus

• Plato

What are electrons?

• an atom’s central regions, which is made up of protons and neutrons

• subatomic particles that have negative charges

• subatomic particles that have neutral charges

• subatomic particles that have positive charges

Tags

NGSS.MS-PS1-1

Whose model suggested that negative particles were mixed in with positively charged material - like seeds in a watermelon?

• J.J. Thomson

• Ernest Rutherford

• Niels Bohr

• Albert Einstein

Place the following atomic models in order, from earliest to latest:

• B, C, A

• C, A, B

• A, C, B

• C, B, A

In the atomic model nicknamed the "plum pudding" model, what do the plums represent?

• the nucleus

• the atom

• the electrons

• the positive material