Name: _____________________________ Date: _________ #: ____________ Atoms and Molecules Video by Physical Science in Action 1. What is the smallest particle of matter? 2. What are the subatomic particles that make up atoms? 3. Draw a simple atom. 4. What did the ancient Greek philosopher Democritus believe about matter? b. What is the term Democritus come up with to describe the “smallest cut”? 5. What are the electric charges of: Proton Neutron Electron Name: _____________________________ Date: _________ #: ____________ 6. What makes one atom different from another? 7. How many elements are found in nature? 8. What is the periodic table of elements? 9. If there are a little over 100 elements, then how are there millions of different substances in the universe? 10. What are the phases of matter? 11. What does movement of sub-atomic particles have to do with the phases of matter?