New Unit 3 Review

What is the formula for the compound formed when a potassium ion (K⁺) and a sulfide ion (S²⁻) unite?

• KS

• K₂S

• KS₃

• KS₂

Tags

NGSS.MS-PS1-1

Which is the chemical formula for dinitrogen monoxide?

• NO₂

• N₂O

• N₂O₃

• NO

Tags

NGSS.MS-PS1-1

What is the correct name for MgF2?

• magnesium difluoride

• monomagnesium fluoride

• magnesium fluoride

• monomagnesium difluoride

What is the name of the compound with the formula CaI2?

• calcium iodine

• calcium iodide

• calcium iodate

• calcium diiodide

Which type of compound is usually formed when a metal reacts with a nonmetal?

• allotropic

• ionic

• molecular

• organic

Which matches the elements in the compound to the correct chemical formula?

• lithium and bromine - Li₂Br

• potassium and oxygen - KO₂

• magnesium and fluorine - MgF₂

• calcium and phosphorus - CaP₂

Tags

NGSS.MS-PS1-1

Which of the following is the correct name for the compound SO3?

• monosulfur dioxide

• trisulfur monoxide

• sulfur trioxide

• trisulfur oxide

Tags

NGSS.MS-PS1-1

Which of the following is the correct way to write the formula for the compound carbon tetrafluoride?

• CF2

• C2F2

• CF4

• C4F

Tags

NGSS.MS-PS1-1

Which of the following is the correct way to write the formula for the compound diphosphorus pentoxide?

• P2O4

• PO4

• P5O

• P2O5

Tags

NGSS.MS-PS1-1

Calcium (Ca) is in the second column of the periodic table and is classified as an alkaline earth metal. Which of the following formulas shows the ratio of a compound formed from calcium and iodine (I)?

• CaI

• Ca2I

• CaI2

• CaI3

Tags

NGSS.MS-PS1-1