1. What is the difference?

2. Single atom of an element Smallest complete unit of matter Made up of like atoms Pure substance Element

3. What is the difference

4. ALL compounds are molecules but NOT all molecules are compounds 2 or more atoms bonded together Molecule NOT a compound because only 1 type of atom is involved 2 or more different atoms bonded together Compound Molecule

5. Atom or Element

6. Single unit Made up of protons, neutrons, electrons Atom Made up of the same atoms Element – electron microscope picture of tungsten

7. Compound or Molecule

8. Ozone 3 atoms Same type of atom Molecule Water Composed of Hydrogen and Oxygen, two different atoms Compound – 2 or more different atoms Molecule – 2 or more atoms

9. Compound or Molecule Electron microscope picture of Caffeine Consists of –Carbon (C) –Hydrogen (H) –Nitrogen (N) –Oxygen (O)

10. Compound or Element

11. Pure substance One type of atoms Gold Element Not a pure substance More then one type of atom Sodium Chloride Compound

12. Atom or Molecule

13. Molecule of nitrogen gas 2 atoms bonded together Atoms Individual atoms

14. List the Elements, Compounds, Molecules

15. N2molecule O2molecule Arelement Neelement Heelement H2element CH4compound, molecule Krelement Xeelement CO2compound, molecule