Which of the following items is a salt?(1 point) Responses antacid antacid sodium hydroxide sodium hydroxide carbonic acid carbonic acid calcium carbonate
The item that is a salt is calcium carbonate.
The item that is a salt is calcium carbonate.
To determine which of the following items is a salt, we need to know what a salt is. A salt is a chemical compound formed by the reaction of an acid and a base. It is typically composed of a metal cation and a nonmetal anion.
Now let's look at the options given:
1. Antacid: Antacids are commonly used to neutralize excess stomach acid. However, they are not salts.
2. Sodium hydroxide: Sodium hydroxide, also known as caustic soda, is an inorganic compound and a strong base. It is not a salt, but it can be used to make salts.
3. Carbonic acid: Carbonic acid is a weak acid formed when carbon dioxide dissolves in water. It is not a salt.
4. Calcium carbonate: Calcium carbonate is a chemical compound consisting of a calcium cation (metal) and a carbonate anion (nonmetal). It is a salt.
Therefore, among the given options, the item that is a salt is calcium carbonate.