Chapter 7 Chemical Formulas and Chemical Compounds

A chemical formula includes the symbols of the elements in the compound and subscripts that indicate

• atomic mass of each element.

• number of atoms or ions of each element that are combined in the compound.

• formula mass.

• charges on the elements or ions.

How many atoms of hydrogen are present in a molecule of dihydrogen monoxide (H₂O)?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

What is the formula for magnesium fluoride?

• MgF

• MgF₂

• Mg₂F

• Mg₂F₃

Tags

NGSS.MS-PS1-1

What is the formula for the compound formed by calcium ions and bromide ions?

• CaBr

• Ca₂Br

• CaBr₃

• CaBr₂

What is the formula for the compound formed by copper (II) ions and chromate ions?

• CuCrO₄

• Cu₂CrO₄

• Cu₂(CrO₄)₃

• Cu(CrO₄)₂

What is the formula for gallium sulfate?

• GaSO₄

• Ga₂SO₄

• Ga₂(SO₄)₃

• Ga(SO₄)₃

What is the formula for strontium hydroxide?

• SrOH

• SrOH₂

• Sr(OH)₂

• Sr(OH)

Name the compound Cu(ClO₃)₂.

• copper (II) chlorate

• copper (II) chloride

• copper (II) chlorite

• copper (II) peroxide

Tags

NGSS.HS-PS1-1

Name the compound Be₃(PO₄)₂.

• beryllium potassium oxide

• triberyllium polyoxide

• beryllium phosphate

• beryllium phosphite

Name the compound NaClO₃.

• sodium chloride

• sodium trioxychlorite

• sodium chlorate

• hypochlorite