Atomic Structure Lesson #2: Historical Development of the Atom

What is the main difference between the atoms of lithium and carbon?

Which component of an atom has almost no mass?

What do the atomic number and mass number of an element represent?

Which term describes a unique number that corresponds to the number of protons in an element?

The atomic number of an element is equal to the number of:

What does the mass number of an element represent?

What are the three subatomic particles that make up an atom?

Which model accurately depicts the structure of an atom?

What is the name of the dense, positively charged region at the center of an atom?

Which subatomic particle carries a positive charge?

What determines the identity of an element?

Which subatomic particle is electrically neutral?