An atom or ion has 7 protons, 7 neutrons, and 6 electrons. Is it positive, negative, or neutral? Why? What element is it?
Can someone please help!

Which is true of chemicals? a. things containing chemicals always cost a lot of money. b. chemicals are never dangerous. c. chemicals are in many substances in a home. d. chemicals are rarely found on earth.

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

What is the standard unit of measure for acceleration?