What two particles are contained in the nucleus of an atom? (Check 2)

What do you call an atom that has an unusual number of neutrons?

What atomic model did Erwin Schrodinger develop?

If an element has an atomic number of 12, how many protons does an atom of that element have?

What is the unit for measuring atomic mass?

What kind of charge will an atom have if it loses several electrons?

What do you call an atom that has gained one or more electrons?

Which of the following are the fundamental forces that govern all matter in the universe? (Check all that apply)

What kind of force keeps the protons and neutrons together in the nucleus?

How many electrons would it take to equal the mass of one proton?

What do you call the negatively charged particle that is in orbit somewhere around the nucleus of an atom?

True or False? In a typical atom, the number of protons and electrons are the same

True or False? Isotopes do not occur naturally.

True or False? The atomic number tells us the number of neutrons in an atom.