7.1-7.2 Formative Quiz

An ion of bromine with a single negative charge has the symbol and the name

• Br+, bromide ion

• Br-, bromide anion

• Br+, bromium ion

• Br+, bromium ion

The platinum (II) ion and the platinum (IV) ion

• are anions.

• are polyatomic ions.

• have charges of 2+ and 4+, respectively.

• have charges of 1+ and 3+, respectively.

What is the name of the compound made of zinc ions, Zn²⁺, and fluoride ions, F-?

• zinc difluoride

• zinc fluorate

• zinc (II) fluoride

• zinc (II) fluorite

What is the chemical formula for the compound made of tin (IV) ions and chloride, Cl-, ions?

• SnCl₄

• Sn₂Cl₂

• SnCl₂

• Sn₄Cl

What is the formula for the compound made of aluminum ions, Al³⁺ and sulfate ions, SO₄^2-?

• AlSO₄

• Al₃SO₄

• Al(SO₄)₃

• Al₂(SO₄)₃

How many atoms are present in one formula unit of barium acetate, Ba(C₂H₃O₂)₂?

• 4

• 8

• 15

• 16

What is the formula for the compound dinitrogen tetroxide?

• N₂O₃

• N₂O₄

• N₃O₂

• N₃O₄

The term acid usually refers to

• a solution of the acid compound in water.

• only the acid compound.

• a compound containing hydrogen.

• a compound containing hydrogen and oxygen.

Which element has the same oxidation number in all of its compounds?

• oxygen

• fluorine

• hydrogen

• chlorine

What is the oxidation number of an atom of nitrogen in the compound N₂?

• 0

• +3

• -3

• -6