Which of these substances is not a mixture of different compounds?

Name: Which of these substances is not a mixture of different compounds?
Brand: Quizplus
Rating: 4.7 (46 reviews)

Question

Quizplus · Accepted Answer

Table salt (NaCl) is a pure compound and not a mixture of different compounds, unlike air (a mixture of nitrogen, oxygen, and other gases), salt water (a mixture of salt and water), gasoline (a mixture of hydrocarbons), and lemonade (a mixture of water, sugar, lemon juice, and other ingredients).

Which of These Substances Is Not a Mixture of Different