The last work in the quiz description should be "discoverers".
It looks like you were going alphabetical, and then added maxwell, curie, Fahrenheit, and Richter as an afterthought (and also put Kelvin before Celsius for some reason).
I suggest you'll get higher ratings by bringing your misspelling leniency in line with other quizzes. Many quizzes accept minor misspellings of difficult proper names (e.g. Fahrenheit).
It looks like you were going alphabetical, and then added maxwell, curie, Fahrenheit, and Richter as an afterthought (and also put Kelvin before Celsius for some reason).
You could add Mohs for "mineral hardness".