Atoms, Elements, & Bonds

Which of the following is the correct pairing of the subatomic particle and its charge?

• Electron: neutral
  Proton: negative
  Neutron: positive
• Neutron: neutral
  Proton: positive
  Electron: negative
• Proton: negative
  Electron: positive
  Neutron: neutral

Where are the neutrons located within an atom?

• In the nucleus

• In the electron cloud

• Atoms don't have protons or neutrons

Which value is most likely the number of protons for saturntonium?

• 388

• 219

• 169

• 171

Which of the following differentiates one element from another?

• The number of protons
• The number of electrons

The number of protons and neutrons

• The Atomic Number

• The Atomic Mass

• The Valence Shell

• The Nucleus

Which of the following is the best description of an ion?

• The simplest form of matter.
• A pure substance made up of all of the same atoms.
• An atom that has a positive or negative charge.

Where are valence electrons located on the model?

• Near the nucleus

• In the middle of the atom

• At the innermost level

• At the outermost level

Why do elements bond?

• To make molecules

• To create a new element
• To become stable

_________ bonds are created when two atoms share electrons.

• Covalent
• Ionic
• Hydrogen
• Peptide

A chemical bond resulting from the attraction between oppositely charged ions.

• A covalent bond

• An ionic bond