Covalent Molecules

How many valence electrons does nitrogen have?

• 3
• 2
• 5
• 1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What can be generalized about covalent bonds?

• Electrons will be exchanged.
• Electrons will be transferred.
• Electrons will be given and taken.
• Electrons will be shared.

What is it called if there are three-pairs of electrons being shared?

• Triple bond
• Bond length
• Tribond
• Chocolate Mousse

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

• A
• B
• C
• D

Tags

NGSS.HS-PS1-1

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

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

Tags

NGSS.HS-PS1-4

Compared to ionic compounds, molecular compounds generally have...

• stronger chemical bonds
• poor conductivity
• a high melting point
• lower densities

Tags

NGSS.HS-PS1-1

NGSS.HS-PS2-6

What type of bond forms between two or more atoms that are charged (+/-)?

• Covalent bond
• Incomplete bond
• Ionic bond
• Metallic bond

Tags

NGSS.HS-PS1-3

What charge does a bromine (Br) ion have?

• -1
• -2
• -3
• -4

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What charge does a potassium (K) ion have?

• +1
• -1
• +2 
• -2

Tags

NGSS.HS-PS1-1

According to the octet rule most elements need _______ valence electrons.

• 2
• 8
• 6
• 18

Tags

NGSS.HS-PS1-1