Bonds

What is a valence electron?

• The sum of neutrons and protons.
• The # of electrons in the last shell.
• A type of bond.
• A popular compound.

Which of these is not a real bond in chemistry?

• James

• Ionic

• Covalent

• Metallic

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

Is hydrogen considered a metal or a non-metal?

• A metal
• Nonmetal
• Metalloid

Ionic or covalent?
H₂O

• Ionic
• Covalent

In an electron dot diagram, two pairs of shared electrons represents a ...

• single bond
• double bond
• triple bond
• quadruple bond

1.What attractions hold two atoms in a molecule together?

• attraction between ions with opposite charges

• attraction between the nuclei of the atoms and shared electrons

• attraction between each nucleus and the electrons of the other atom

• attraction between the molecule and other molecules

Which of the following is the correct Lewis dot structure for the molecule fluorine (F₂)?

• A
• B
• C
• D

Oxygen gas consists of oxygen molecules. Each oxygen molecule consists of how many covalently bonded oxygen atoms?

• three

• two

• four

An oxygen molecule is an example of a _____________- a molecule that contains two atoms.