Atomic Structure

Which 2 subatomic particles constitute the nucleus of an atom?

• Electron and neutron

• Electron and proton

• Proton and neutron

• Any of the 3 options is correct.

Tags

NGSS.HS-PS1-8

Based on the given atomic model, which number below represents the mass of the atom?

• 6

• 12

• 18

• 24

Tags

NGSS.HS-PS1-7

What would you do to verify the identity of the atom that is shown in the atomic model?

• Count the number of electrons. This is always the atomic number of the atom.

• Count the number of protons. This is always the atomic number of the atom.

• Get the sum of the electrons and the protons. This is always the atomic number of the atom.

• Get the sum of the protons and electrons. This is always the atomic number of the atom.

Tags

NGSS.MS-PS1-1

Based on the given chemical symbol for copper (Cu), which number represents its atomic mass?

• 29

• 35

• 63.55

• 64

Tags

NGSS.HS-PS1-1

Based on the given chemical symbol for copper (Cu), which number represents its atomic number?

• 29

• 35

• 63.55

• 64

Tags

NGSS.HS-PS1-1

mass number

• number of neutrons in an atom

• number of protons in an atom

• number of neutrons and protons in an atom

• number of protons and electrons in an atom

• number of neutrons, protons and electrons in an atom

Which particle has a positive charge?

• electron
• orbital
• proton
• neutron

An electron has a _____________ charge.

• negative

• positive

• neutral

What number indicates an electron?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-1

How many electrons are in the element, Oxygen, with the atomic number of 8?

• 7
• 10
• 8
• 9

Tags

NGSS.HS-PS1-1