Unit 7 (The Atom) Quiz Review

Which particles have a mass of one atomic mass unit (or 1 amu)? Choose all that apply.

• Proton

• Neutron

• Electron

• Nucleus

On the orbital rings surrounding the nucleus of atom, I can find these, that are negatively charged particles.

(a)  

The nucleus contains the most mass of the atom.

• True

• False

What does the atomic number of each element help us identify?

How many protons does an element have with an electron configuration of 2 - 8 - 3 ?

• 3

• 8

• 2

• 13

Which discovery of the atom came first?

• Planetary Model (Electrons orbit the nucleus)

• Gold Foil Experiment (Atoms have a small dense nucleus surrounded by empty space)

• Cloud Model (Electrons behave as waves, introduced electron orbitals)

All elements must have the same number of

• Protons and Neutrons

• Protons and electrons

• Neutrons and Electrons

• Protons, Neutrons & Electrons

The nucleus of an atom has what kind of charge?

• Positive

• Negative

• Neutral

How many neutrons does an element have with a mass number of 32 and an atomic number of 16?

• 2

• 16

• 32

• 48

In order to find the number of neutrons in an atom of a particular element, what equation do I need to follow?