Atomic Structure and Periodic Table

Each cell on the periodic table represents how many atoms?

The mass of an atom is found in the

What are the two most abundant elements found in the atmosphere?

If Sodium has an atomic number of 11 and an atomic mass of about 23, how many electrons does it have?

Atomic number is equal to ______________.

How many neutrons would an atom of phosphorous have if its atomic number is 15 and its atomic mass is 30.974?

If you looked at an atomic model of an atom, how could you tell what element it is?

Which subatomic particle is NOT found in the nucleus?

Which subatomic particle has a positive charge?

What two subatomic particles are always EQUAL in an electrically neutral atom?

You can find the atomic mass by _________________.