The Atom

1. What are atoms?
2. How many naturally occurring types of atoms are there?
3. How many more are scientists able to make in a lab?

Atom 2

1. What are the three particles atoms are made of?
2. What happens when protons and neutrons join together?

Elements

1. What is an element?
2. How many elements are there?
​3. What are isotopes? 

​Periodic Table

Below the periodic table in the third paragraph, click on ‘how to calculate the number of protons, neutrons, and electrons in an atom of an element.’ To calculate the number of protons, electrons and neutrons in an atom, write out the 4 steps listed.  Make sure you read the entire page.