Atomic structure

True or False - Protons and Neutrons have about the same mass.

• True - They have about the same mass.

• False - Protons are much heavier than Neutrons.

• False - Neutrons are much heavier than Protons.

• True - They have significantly different masses.

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Electrically charged

What determines the identity of an element?

• The number of neutrons.

• The number of protons.

• The number of electrons.

• The atomic mass.

What is an isotope?

• Atoms of the same element with different numbers of protons.

• Atoms of the same element with different numbers of neutrons.

• Atoms of different elements with the same number of neutrons.

• Atoms that have the same mass but different charges.

What is the mass number of an atom?

• The total number of protons and neutrons.

• The total number of electrons in an atom.

• The number of protons only.

• The number of neutrons only.

What is the atomic mass of Boron?

• 10

• 11

• 12

• 13

What is the atomic number of an element?

• The number of neutrons in the nucleus.

• The number of protons in the nucleus.

• The total number of electrons in an atom.

• The average mass of an atom.

What is the electron configuration of Carbon?

• 1s² 2s² 2p²

• 1s² 2s² 2p⁶

• 1s² 2s² 2p¹

• 1s² 2s² 2p³

What is the charge of an electron?

• Positive

• Neutral

• Negative

• Variable

Which particles are located in the nucleus?

• Electrons

• Protons & Neutrons

• Photons

• Neutrinos