Another name for Epsom salt is:

Epsom salt is commonly known as magnesium sulfate. It is a naturally occurring mineral that has various uses, including in gardening, as a dietary supplement, and in spa treatments. The chemical formula for Epsom salt is MgSO₄, which indicates that it is composed of magnesium and sulfate ions.

Understanding the composition helps clarify why magnesium sulfate is appropriately referred to as Epsom salt. Magnesium plays a vital role in plant growth and human health, which is often why Epsom salt is utilized in horticulture and in medicinal applications.

The other options do not match the chemical composition of Epsom salt:

• Sodium sulfate consists of sodium and sulfate, which does not provide the same properties as Epsom salt.

• Calcium sulfate, while also a sulfate, is made up of calcium, not magnesium.

• Zinc sulfate contains zinc and sulfate, further differentiating its properties and uses from those of magnesium sulfate.

Therefore, magnesium sulfate is the correct identification for Epsom salt due to its specific chemical structure and recognized applications.