Covalent and ionic bonding

Which of the following formulas represents an ionic compound?

• N2O4

• BaI2

• CS2

• PCl3

In the formation of a covalent bond, electrons are _____.

• transfered

• gained

• lost

• shared

Tags

NGSS.HS-PS1-1

What types of elements form a covalent bond?

• 2 metals

• a metal and a non-metal

• 2 non-metals

• atoms do not bond

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.

Which of the following is NOT formed by a covalent bond?

• K₂S
• H₂O
• I₂
• CO₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

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

Tags

NGSS.HS-PS1-1

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

• good conductivity
• greater densities
• more chemical bonds
• a low boiling point

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

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

what type of bond is the strongest

• single
• Double
• coordination
• triple

How many are shared in a single bond?

• 2 pairs
• 4
• 2
• 1