1.  Flame Test Activity October 19, 2010 andrewpaladie.wordpress.com

2. Figuring out what things are made of  Scientists want to know what elements are in different samples.

3. Figuring out what things are made of  Scientists want to know what elements are in different samples.  Which sample is sodium chloride?

4. Figuring out what things are made of  Scientists want to know what elements are in different samples.  Which sample is sodium chloride? Sodium chloride Magnesium chloride

5. Figuring out what things are made of  Scientists want to know what elements are in different samples.  Which sample is sodium chloride?  What is the Sun made of? Sodium chloride Magnesium chloride http://en.wikipedia.org/wiki/Sun

6. Properties of Light  Light is a form of energy. quarknet.fnal.gov Electromagnetic Radiation Spectrum

7. Properties of Light  Light is a form of energy.  Visible light behaves both like a wave and a particle.

8. Properties of Light  Light is a form of energy.  Visible light behaves both like a wave and a particle.  Let’s meet Roy G. Biv. centuriogroup.wordpress.com

9. Properties of Light  Light is a form of energy.  Visible light behaves both like a wave and a particle.  Let’s meet Roy G. Biv. Distance covered

10. Properties of Light  Light is a form of energy.  Visible light behaves both like a wave and a particle.  Let’s meet Roy G. Biv. Low frequency High Frequency Low energy High energy

11. Excitation of Electrons  We can think of electron configurations in terms of energy.

12. Excitation of Electrons  We can think of electron configurations in terms of energy. Let’s make the energy diagram for sodium (Na)

13. Excitation of Electrons  We can think of electron configurations in terms of energy. Start by putting electrons in the bottom orbital and move up one orbital at a time. Let’s make the energy diagram for sodium (Na)

14. Excitation of Electrons  We can think of electron configurations in terms of energy. Start by putting electrons in the bottom orbital and move up one orbital at a time. Let’s make the energy diagram for sodium (Na)

15. Excitation of Electrons  We can think of electron configurations in terms of energy. Start by putting electrons in the bottom orbital and move up one orbital at a time. Let’s make the energy diagram for sodium (Na)

16. Excitation of Electrons  We can think of electron configurations in terms of energy. Start by putting electrons in the bottom orbital and move up one orbital at a time. Let’s make the energy diagram for sodium (Na)

17. Excitation of Electrons  We can think of electron configurations in terms of energy. Start by putting electrons in the bottom orbital and move up one orbital at a time Let’s make the energy diagram for sodium (Na)

18. Excitation of Electrons  We can think of electron configurations in terms of energy. Start by putting electrons in the bottom orbital and move up one orbital at a time When putting electrons into orbitals of the same energy, put electrons into each orbital before pairing the electron. Let’s make the energy diagram for sodium (Na)

19. Excitation of Electrons  We can think of electron configurations in terms of energy. Start by putting electrons in the bottom orbital and move up one orbital at a time When putting electrons into orbitals of the same energy, put electrons into each orbital before pairing the electron. Let’s make the energy diagram for sodium (Na)

20. Excitation of Electrons  We can think of electron configurations in terms of energy. Start by putting electrons in the bottom orbital and move up one orbital at a time When putting electrons into orbitals of the same energy, put electrons into each orbital before pairing the electron. Let’s make the energy diagram for sodium (Na)

21. Excitation of Electrons  We can think of electron configurations in terms of energy. Start by putting electrons in the bottom orbital and move up one orbital at a time When putting electrons into orbitals of the same energy, put electrons into each orbital before pairing the electron. Let’s make the energy diagram for sodium (Na)

22. Excitation of Electrons  We can think of electron configurations in terms of energy. Start by putting electrons in the bottom orbital and move up one orbital at a time When putting electrons into orbitals of the same energy, put electrons into each orbital before pairing the electron. Let’s make the energy diagram for sodium (Na)

23. Excitation of Electrons  We can think of electron configurations in terms of energy. Let’s make the energy diagram for sodium (Na) GROUND STATE

24. Excitation of Electrons  What happens if we add energy to the atom in the form of heat? Ground State Excited State

25. Excitation of Electrons  What happens if we add energy to the atom in the form of heat?

26. Excitation of Electrons  What happens if we add energy to the atom in the form of heat? Some atoms release this energy in the form of visible light!

27. Flame Test Demo  Each element has a specific way in which their electrons are excited upon heating.  This means each element gives off different colors when the electrons are returning to the ground state after being heated.  Now we have a way to identify different elements! Sample