1 / 18

Chemistry Week 23

Chemistry Week 23. Please get out your Classwork !. February 21, 2013. AGENDA: 1 – Bell Ringer & Agenda 2 – Review Classwork 3 – Review Predicting Products 4 – Quiz Review. Today’s Goal: Students will be able to review for their Unit 5 Quiz #2 Homework

marlee
Télécharger la présentation

Chemistry Week 23

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chemistry Week 23 Please get out your Classwork!

  2. February 21, 2013 AGENDA: 1 – Bell Ringer & Agenda 2 – Review Classwork 3 – Review Predicting Products 4 – Quiz Review Today’s Goal: Students will be able to review for their Unit 5 Quiz #2 Homework • Complete Quiz Review– due tomorrow. • Final day for Lab Report is Tomorrow! • Week 22 Work is due by FRIDAY!! • STUDY FOR YOUR QUIZ

  3. Thursday, February 21 Objective: Students will be able to review for their Unit 5 Quiz #2 Bell Ringer: What is the molar mass of Na2SO4? Na = S = O =

  4. 2MINUTES REMAINING…

  5. Thursday, February 21 Objective: Students will be able to review for their Unit 5 Quiz #2 Bell Ringer: What is the molar mass of Na2SO4? Na = S = O =

  6. 1MINUTES REMAINING…

  7. Thursday, February 21 Objective: Students will be able to review for their Unit 5 Quiz #2 Bell Ringer: What is the molar mass of Na2SO4? Na = S = O =

  8. 30 seconds Remaining…

  9. Thursday, February 21 Objective: Students will be able to review for their Unit 5 Quiz #2 Bell Ringer: What is the molar mass of Na2SO4? Na = S = O =

  10. 10 seconds Remaining…

  11. BELL-RINGER TIME IS UP!

  12. February 21, 2013 AGENDA: 1 – Bell Ringer & Agenda 2 – Review Classwork 3 – Review Predicting Products 4 – Quiz Review Today’s Goal: Students will be able to review for their Unit 5 Quiz #2 Homework • Complete Quiz Review– due tomorrow. • Final day for Lab Report is Tomorrow! • Week 22 Work is due by FRIDAY!! • STUDY FOR YOUR QUIZ

  13. Thursday, February 21 Objective: Students will be able to review for their Unit 5 Quiz #2 Bell Ringer: What is the molar mass of Na2SO4? Na = S = O = 23.0 g/mol 32.0 g/mol 4 x 16.0 = 64 g/mol 119.0 g/mol

  14. Cornell Notes • Obj: SWBAT Define the Mole and Calculate Molar Mass • Date: 2/20/2013 • A mole is a quantity used to measure the amount of matter present. • Like a dozen = 12 • A mole = 6.02 x 1023 • A dozen doughnuts = 12 doughnuts • A mole of carbon = 6.02 x 1023atoms (particles) of C • A mole of LiF = 6.02 x 1023 atoms of Li and F What is the mole and how is it defined?

  15. Cornell Notes (continued) How do you determine the number of moles of a compound in a chemical reaction? • The coefficients in a balanced chemical equation represent the number of moles of that compound that was reacted or produced. __ Na + __Cl2 __ NaCl 2 2 1 Na = 1 Na= 1 Cl = 2 Cl = 1 x 2 =2 x 2 =2 x 1 =2 x 2 =2 • In the chemical reaction 2 moles of sodium react with 1 mole of chlorine to form 2 moles of sodium chloride.

  16. Cornell Notes (continued) What is molar mass? • Since the mole is always the same number, a mole of different elements or compounds will have different masses. • The mass of 1 mole was defined by Carbon-12. • 1 mole of carbon = 12 g 1 mol • 6.02 x 1023 atoms carbon = 12 g

  17. Cornell Notes (continued) How do you calculate molar mass? • Determine types of atoms in a compound. • Determine the number of each type of atom. • Find their atomic masses. • Sum all masses! Units = g / mol

  18. Practice Problems (Left Side) NaCl = Na = Cl = 58.5 g 1 mol Ag = 107.9 g 1 mol LiNO3 = Li = N = 3 x O = 68.9 g 1 mol 23.0 6.9 35.5 14.0 + + (3x16.0)

More Related