Which substance has a pH level greater than 7?

A substance with a pH level greater than 7 is considered basic or alkaline. Baking soda, which is sodium bicarbonate, is a classic example of such a substance. Its pH level typically ranges from about 8 to 9, indicating that it is on the alkaline side of the pH scale.

Baking soda is commonly used in baking, as a leavening agent, and for various household cleaning purposes. Its ability to react with acids makes it useful in neutralizing them, which contributes to its basic pH level.

In contrast, orange juice and vinegar are acidic, having pH levels lower than 7. Water is neutral with a pH of 7. Therefore, the only substance listed that has a pH level greater than 7 is baking soda.