REVIEW for Ch 7 Test: Covalent Bonding

Which covalent molecule has the strongest bond?

• F-F

• N≡N

• O=O

• They are all equally strong

How many single covalent bonds can halogens form? Mark only one oval.

• 2

• 4

• 3

• 1

How many pi bonds are there in a triple covalent bond? Mark only one oval.

• 2

• 1

• 3

• 4

An ammonia molecule consists of one nitrogen atom and three hydrogen atoms. How many lone pairs of electrons are present in an ammonia molecule?

• 1

• 2

• 3

• 4

The scientific name for phosphine is phosphorus trihydride. Phosphorus is a Group 15 element. How many lone pairs does phosphorus have in this molecule?

• 0

• 1

• 2

• 3

Name the compound P₂O₃.

• Phosphorus oxide

• Phosphorus trioxide

• Diphosphorus oxide

• Diphosphorus trioxide

Tags

NGSS.MS-PS1-1

Name the compound SiS₂.

• Silicon disulfide

• Silicon sulfide

• Monosilicon disulfide

• Monosilicon sulfide

Tags

NGSS.MS-PS1-1

Name the compound IBr₃

• Iodine tribromide

• Iodine bromide

• Monoiodide tribromide

• Iodide tribromide

Tags

NGSS.MS-PS1-1

Name the compound Se₂Cl₂. Mark only one oval.

• Selenium chloride

• Diselenide dichloride

• Diselenium dichloride

• Selenide chloride

Tags

NGSS.MS-PS1-1

Which is the correct formula for the compound dinitrogen monoxide? Mark only one oval.

• N₂O₂

• NO₂

• N₂O

• (NO)₂

Tags

NGSS.MS-PS1-1