Chemistry Test Chemical Bonding 2

Question 1

Which type of bond forms when electrons are transferred from one atom to another?

Accepted Answer

Ionic bond

Answer

Ionic bonds form through the transfer of electrons, creating oppositely charged ions that attract each other.

Question 2

What is the bond angle in a water molecule (H₂O)?

Accepted Answer

104.5°

Answer

Water's bond angle is 104.5° because two lone pairs on oxygen repel the bonding pairs, compressing the angle below tetrahedral.

Question 3

In a Lewis structure, a double bond consists of how many shared electron pairs?

Accepted Answer

2

Answer

A double bond contains two shared electron pairs (4 electrons total) between the bonded atoms.

Question 4

Which molecule has a linear geometry due to its bonding?

Accepted Answer

CO₂

Answer

CO₂ is linear because carbon forms two double bonds with oxygen and has no lone pairs, giving 180° bond angles.

Question 5

What property of an atom determines its ability to attract electrons in a bond?

Accepted Answer

Electronegativity

Answer

Electronegativity measures an atom's tendency to attract shared electrons toward itself in a chemical bond.

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