honors chem chapter 8 and 9 practice

How many electrons should Oxygen have around its Lewis dot model?

• 5
• 6
• 7
• 8

Tags

NGSS.HS-PS1-1

Which of the following is the correct Lewis structure for the compound PBr₃?

• structure A
• structure B
• structure C
• structure D

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

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

• 2
• 8
• 6
• 18

Tags

NGSS.HS-PS1-1

Which of the following compounds has polar covalent bonds (can choose more than one answers):

• KCl

• Cl₂

• HCl

• CCl₄

The central atom in BrF₃ is surrounded by

• three single bonds and no lone pairs of electrons

• two single bonds, one double bond, and no lone pairs of electrons

• three single bonds and one lone pair of electrons

• three single bonds and two lone pairs of electrons

Hydrogen needs _____ electrons in its valence shell to be stable.

• 4
• 6
• 8
• 2

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

If electrons are shared unequally then the bond is....

• Non-polar covalent
• Ionic
• Non-polar ionic
• Polar covalent

If electrons are shared equally then the bond is....

• Non-polar covalent
• Ionic
• Non-polar ionic
• Polar covalent

Metals and nonmetals form which kind of bond?

• Polar covalent
• Ionic
• Non-polar covalent
• Metallic

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

The ability of an atom attracts electrons is called....................

• Ionization energy

• Electronegativity

• Electricity

• Nuclear force