If you add a proton to an atom, what will happen?
The atomic weight will change
The atomic number will change
The element's identity will change
All of the above
What is the force that keeps electrons in orbit around a nucleus?
The attraction of negative and positive charges.
You are trying to identify an unknown substance and you have narrowed it down to 4 possibilities.
If the substance is dull in color, which of the following elements is most likely what the substance is?
Nonmetals readily strip electrons from metals. NaCl is a substance that shows this trend. Which
of the elements in NaCl strips electrons and has a negative charge.
If you needed a substance to fill up a balloon with so it can float, which of the following would be a viable option?
None of the above