The central region of an atom where its neutrons and protons are is called the _____.

The particle that moves around the outside of nucleus is a(n)...

True or False? Electrons have a negative charge.

Elements on the periodic table are organized by which of these?

True or false: 2 elements can have the same atomic number?

What does the atomic number tell about an atom?

What does the mass number tell about an atom?

What is the atomic mass of Fluorine?

What is the number of protons that the element in this image contain?

What is the atomic number for an element with three protons?

How many neutrons are in the atom potassium "K"??

An atom with atomic number 6 would have how many protons 

If an atom has 10 protons, 10 neutrons, and 10 electrons, what is the mass of the atom?

How many neutrons would you expect the average gold atom to have given the information shown?

Lithium has the following atomic information:

3 protons / 3 electrons /4 neutrons - is this the correct Bohr model for lithium?

What element is this?

Which element is this?

What is the atomic number of this element?

What element is this?

Which element is this?