Names and Formulas of Compounds (1-5)

The formula for barium chloride is BaCl₂. The chemical formula for barium chloride shows the number of ___________ of each element in the ___________ representative unit of the substance.

• atoms, smallest

• atoms, biggest

• molecules, smallest

• molecules, biggest

Table salt (sodium chloride) is a commonly used ionic compound that is the product of the reaction between sodium and chloride ions. What is the symbol and the name of the cation that makes up table salt?

• The symbol is Cl^2﹣and the name is the chloride (II) ion.

• 1. The symbol is Na²⁺ and the name is the sodium (II) ion.

• 1. The symbol is Cl^﹣and the name is the chloride ion.

• 1. The symbol is Na⁺ and the name is the sodium ion.

1. Calcium bromide is the product of calcium and bromide ions. What is the formula for calcium bromide?

• 1. CaBr

• 1. CaBr₂

• 1. Ca₂Br

• 1. Ca₂B_r2

1. What is the name of the chemical with the formula SF₆?

• 1. sulfur (VI) fluoride

• sulfur hexafluoride

• 1. sulfur heptafluoride

• 1. sulfur (6) fluoride

1. A group of high school chemistry students are practicing how to write molecular compound names and formulas. They are attempting to write formulas for the following molecular compounds: 

• carbon tetrachloride

• sulfur dioxide

• dinitrogen monoxide

After comparing all of the answers, the students realized that some people had written different formulas for the same compounds. 

Which of the following formulas is correct?

CCl₄    CaCl₄    S₂O₂   SO₂  NO₂  N₂O

• CCl₄ 

• CaCl₄   

• S₂O₂

• NO₂