Yes. In all of them.
In the first five books, Severus Snape was the Potions master. In book six Horace Slughorn took over the position.
We have never been told whether Snape has a middle name or not. It's not in the books, nor has J.K. Rowling ever mentioned it in any of her interviews. He might not have a middle name. But if he does have one, it is probably Tobias, which was his father's name. Most of the males in the Harry Potter series have their father's first name, or their uncle's first name, for their middle name: Harry James Potter, Ronald Bilius Weasley, James Sirius Potter (Sirius was Harry's godfather), Teddy Remus Lupin, Remus John Lupin, etc.
Harry finds the book in the Potions dungeon storeroom when his Potions teacher Slughorn tells him to go ahead and take one of the old books.
Horace E. F. Slughorn returned to his previous post as Potions Master after Severus Snape was given to position of Defence Against The Dark Arts teacher in Harry Potter and the Half-Blood Prince.
Names, like Helga Hufflepuff, Severus Snape, 'Moaning' Myrtle
Severus Snape
In the first five books, Severus Snape was the Potions master. In book six Horace Slughorn took over the position.
"People will think you're up to something" which was said by Severus Snape in Harry Potter and the Philosopher's Stone.
Severus Snape He was the potions master in all of the books except the last.
Severus Snape is the potions teacher in most of the books. In the sixth book that position is taken by Horace Slughorn.
Severus Snape kills Albus Dumbledore,Tom Riddle kills Severus Snape(and finally Tom Riddle kills himself accidentally, but he has never been headmaster, so that doesn't matter)
We have never been told whether Snape has a middle name or not. It's not in the books, nor has J.K. Rowling ever mentioned it in any of her interviews. He might not have a middle name. But if he does have one, it is probably Tobias, which was his father's name. Most of the males in the Harry Potter series have their father's first name, or their uncle's first name, for their middle name: Harry James Potter, Ronald Bilius Weasley, James Sirius Potter (Sirius was Harry's godfather), Teddy Remus Lupin, Remus John Lupin, etc.
They don't use this word before the fourth book, but of course Lucius Malfoy, Peter Pettigrew and Severus Snape (who appear in books 1-3) are indeed Death-Eaters. (Severus Snape was a death eater, then changed sides.)
Harry finds the book in the Potions dungeon storeroom when his Potions teacher Slughorn tells him to go ahead and take one of the old books.
Horace E. F. Slughorn returned to his previous post as Potions Master after Severus Snape was given to position of Defence Against The Dark Arts teacher in Harry Potter and the Half-Blood Prince.
Names, like Helga Hufflepuff, Severus Snape, 'Moaning' Myrtle
Dumbledore (or possibly Lupin) tells Harry the story of James Potter saving Snape in the third Harry Potter book, I believe.