Atomic Model

An atom is electrically neutral because

• the numbers of protons and neutrons are equal.

• the numbers of protons and electrons are equal.

• neutrons balance the protons and electrons.

Tags

NGSS.HS-PS1-7

Which of the following does the nucleus contain?

• protons and electrons

• neutrons and electrons

• protons and neutrons

Tags

NGSS.HS-PS1-8

Which of the following statements is correct?

• Protons are positively charged and neutrons are negatively charged.

• Protons are negatively charged and electrons are positively charged.

• Protons are positively charged and electrons are negatively charged.

Who is the person credited with the formation of the "plum pudding" or "chocolate-chip cookie" model?

• Thomson

• Rutherford

• Bohr

• Dalton

Tags

NGSS.HS-PS1-2

Which model of the atom is denoted as the "plum pudding" or "chocolate-chip cookie" model?

• A

• B

• C

• D

• E

What subatomic particle represents the "plums" in the "plum pudding" or the chocolate chips in the "chocolate-chip cookie" model?

• neutrons

• protons

• electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Who is credited with developing model D?

• Thomson

• Dalton

• Bohr

• Rutherford

Dalton's model of the atom is represented by which letter?

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS1-7

Who discovered the subatomic particle "electron"?

• Dalton

• Thomson

• Rutherford

• Bohr

Who discovered the nucleus of the atom?

• Dalton

• Thomson

• Rutherford

• Bohr