Chemical Bonding Review

What is the outermost shell on an atom called?

• Valence shell

• Electron Shell

• Electron Cloud

• Outermost shell

Electrons found in the valence shell are called:

• Valence electrons

• Negative electrons

• outermost electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons do most atoms need in its outermost shell to be considered stable and full?

• 2

• 4

• 6

• 8

If an atom does not have a full shell of valence electrons it will likely:

• stay the way it is

• dissolve into nothing

• form chemical bonds

• form negative bonds

When one atom transfers an electron to another it forms a _______ bond.

• Ionic

• Metallic

• Covalent

What things does an electron dot diagram show?

• the chemical symbol of the atom

• the electrons in the valence shell

• all electrons in the atom

• the atomic mass of the atom

The __________ number represents the number of valence electrons.

• period

• group

You should draw dots representing electrons on a dot diagram in which order.

• clockwise

• counterclockwise

The diagram shows an electron shell model of a sodium atom.

How would the model change as the atom forms bonds?

• The third shell would have eight electrons after the atom gains seven electrons to fill the outermost shell.

• The third shell would be empty so that the eight electrons in the second level would be outermost after the atom loses one electron.

• The first and third shells would be empty so that the atom would have eight electrons in its remaining shell after the atom loses three electrons.

• The first shell would have two electrons and the second shell would have six electrons after the atom loses three electrons.

Tags

NGSS.MS-PS1-1

Atoms of which elements form bonds without satisfying the octet rule?

• potassium (K) and sodium (Na)

• neon (Ne) and argon (Ar)

• nitrogen (N) and fluorine (F)

• helium (He) and hydrogen (H)