1. Tuesday February 24 Objective: Convert from moles to number of molecules and vice versa. Checkpoint: Using the following activity series, determine if the reactions will happen. If they do happen, write the products and balance the reaction. Na + Al 2 (CO 3 ) 3  Ca + HCl  Pb + Fe(NO 3 ) 3  Ag + Zn(NO 3 ) 2  Homework: – Lab report due Friday

2. Na + Al 2 (CO 3 ) 3  Ca + HCl  Pb + Fe(NO 3 ) 3  Ag + Zn(NO 3 ) 2  Na + Al 3+ CO 3 2- Na + Na 2 CO 3 + Al CO 3 2- CaCl 2 + H Ca 2+ H+H+ Cl - Ca 2+ Cl - 2 2 36 2

3. Due Friday

5. Moles

6. What is a “mole”? A mole is many things, including a number!

7. 1 dozen = 12 A dozen is just a number. 12 donuts 1 dozen donuts 1 donut

8. 1 mole = 6.02 x 10 23 602,000,000,000,000,000,000,000 Why do we need a number that big? Because atoms are so small! We need to be able to see what we are working with!

9. 100 atoms: 1,000,000 atoms: 100,000,000,000 atoms: INVISIBLE!

10. 602,000,000,000,000,000,000,000 (or 6.02 x 10 23 atoms) 1 mole

11. 1 mole = 6.02 x 10 23 602,000,000,000,000,000,000,000

12. 1 dozen (12) donuts 1 dozen (12) cupcakes 1 dozen (12) eggs 1 dozen (12) people

13. 1 mole = 6.02 x 10 23 602,000,000,000,000,000,000,000 1 mole (6.02 x 10 23 particles) 1 mole (6.02 x 10 23 particles) 1 mole (6.02 x 10 23 particles) 1 mole (6.02 x 10 23 particles) 1 mole (6.02 x 10 23 particles) 1 mole (6.02 x 10 23 particles)

14. Check for understanding Which has a greater number of particles? 1 mole of saltOR2 moles of sugar Which has a greater number of particles? 1 mole of sugarOR2 moles of salt? How many particles are in 1 mole of water? 6.02 x 10 23 particles of water How many particles are in 2 moles of copper? 12.04 x 10 23 particles of copper

15. Avogadro’s Number 6.02 x 10 23 (602,000,000,000,000,000,000,000)

16. 1 mole = 6.02 x 10 23 6.02 x 10 23 = 1 mole A “mole” is a really big number! (602,000,000,000,000,000,000,000)

17. 1 mole = 6.02 x 10 23 22 0.5 mole = 3.01 x 10 23 (301,000,000,000,000,000,000,000)

18. 0.8 mol x mol = 1 6.02 x 10 23 4.8 x 10 23 atoms 5 x 10 23 atoms 1 mole = 6.02 x 10 23 atoms or molecules You have 0.8 mole of gold. How many atoms of gold do you have? atoms

19. 3.25 mol x mol = 1 6.02 x 10 23 1.9565 x 10 24 atoms 1.96 x 10 24 atoms 1 mole = 6.02 x 10 23 atoms or molecules You have 3.25 mols of gold. How many atoms of gold do you have? atoms

20. x mol = 1 8.24 x 10 24 atoms 13.6899 mol 13.7 mol 1 mole = 6.02 x 10 23 atoms or molecules You have 8.24 x 10 24 atoms of hydrogen. How many moles of hydrogen do you have? 6.02 x 10 23 atoms

21. x mol = 1 1.3 x 10 22 molec 0.02159 mols 0.022 mols 1 mole = 6.02 x 10 23 atoms or molecules You have 1.3 x 10 22 molecules of water. How many moles of water do you have? 6.02 x 10 23 molec

22. Thought of the Week Infuse your life with action. Don't wait for it to happen. Make it happen. Make your own future. Make your own hope. Make your own love. Bradley Whitford