An example of a grad-school level question?
When a formula unit of magnesium sulfide, MgS, is separated into magnesium and sulfur particles, the particles are called

An example of a grad-school level question?
In the lab, students are working with substances that could cause burns. Which of these safety precautions is most important to follow?

An example of a grad-school level question?
A group of students was preparing an activity to determine whether certain materials will float or sink when placed on water. Before the experiment started, one student said, "I think the sponge will float." This statement was

An example of a grad-school level question?
What may form as a direct result of a star collapsing?