Simplify the following text for a Grade 6 native English-speaking person.
Original: Nitric acid ( HNO3 ) , also known as aqua fortis and spirit of nitre , is a highly corrosive and toxic strong acid .
Simplified: Nitric Acid ( HNO3 ) is a very corrosive and toxic strong acid that can cause severe burns . It is also known as aqua fortis .