Random question?

Which of the following describes an object that must have a net negative charge?

Generate a question

Question generated: The Moon is visible to observers on Earth because of

Problem: Write a question you would see in a school textbook.

Answer: A student is using hydrochloric acid in an investigation. Which piece of safety equipment is most important during this investigation?

question: Write a question you would see in a school textbook. OPTIONS:
- a heavier nucleus.
- a greater atomic mass.
- more electrons than protons.
- more electrons than neutrons.
answer: A negatively-charged ion has

An example of a grad-school level question?
A student wants to look under a heavy rock. Which simple machine would be BEST to use to lift the rock?

Random question?
David planted ten corn seeds in sandy soil and ten corn seeds in clay soil. He kept both groups of plants at room temperature, gave them the same amount of water, and placed them all in the same sunny room. Which of the following questions is David most able to answer with his experiment?