Chemical Reactions & The mole & Chemistry Ms. Boon

Catalyst  How many molecules are in 2 moles of H 2 O?  How many atoms are in 2 moles of H 2 O?  2 mol x 6.02 x molecules = x mol  Then, for the second question, first we find the number of atoms in a molecule of water. There are 3.  Then, this means that for every mole of water there are 3 moles of atoms. To get the final answer, multiply the answer from number 1 by 3.  3 x x = x atoms

Bubble Gum!  Focus Question: What does bubble gum have to do with chemistry?  creen&NR=1&v=gCnOmYsAiPU creen&NR=1&v=gCnOmYsAiPU

Homework Review  What is the molar mass of sucrose (C 12 H 22 O 11 )?  Answer:  C= 12 x 12 = 144 g  H = 1 x 22 = 22 g  O = 16 x 11 = 176 g  Total mass = 342 g/mol

Homework Review  2) What is the mass of 2 moles sucrose?  Answer: 2 mol x 342 g/mol = 684 g  3) You have 5 g sucrose, how many moles do you have?  Answer: (5 g) x 1 mol = mol 342 g

Bubble Gum Lab  Groups of 4 or 5 at your table  Review and assign group roles (5 min)  Read and complete Pre-Lab Questions (5 min)  Read and complete Laboratory Question, Safety Precautions, Materials (5 min)  Procedure! Read entire procedure and review the data tables with your group before you begin. (7 min)  Complete lab and collect data. (20 min)  After completing your data collection and analysis, check your work with Ms. Boon and then pick up the post lab questions.

Mole Quiz #2 and Chemical Reactions Quiz  Ms. Boon will pass out your Mole Quiz #1 answer sheet.  If you scored 0/5, 1/5, 2/5 or 3/5, redo the section. Choose at least 3 new questions that you did not attempt before.  All answers will be written in the answer sheet.  Complete the entire Chemical Reactions Quiz. Fill in your answers on the answer sheet.