05 bubble gum lab
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Transcript 05 bubble gum lab
Chemical
Reactions &
The mole
10.04 & 10.05
Chemistry Ms. Boon
Catalyst
Objective: I can
How many molecules are in 2 moles of H2O?
How many atoms are in 2 moles of H2O?
2 mol x 6.02 x 1023 molecules = 12.04 x 1023
1 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 12.04 x 1023 = 36.12 x 1023 atoms
balance chemical
equations.
Agenda:
• Catalyst
• Bubble Gum Lab
• Mole Quiz #2 &
Chemical Reactions
Bubble Gum!
Focus Question: What does bubble gum
have to do with chemistry?
http://www.youtube.com/watch?feature=ends
creen&NR=1&v=gCnOmYsAiPU
Objective: I can
balance chemical
equations.
Agenda:
• Catalyst
• Bubble Gum Lab
• Mole Quiz #2 &
Chemical Reactions
Homework Review
What is the molar mass of sucrose
(C12H22O11)?
Answer:
C= 12 x 12 = 144 g
H = 1 x 22 = 22 g
O = 16 x 11 = 176 g
Total mass = 342 g/mol
Objective: I can
balance chemical
equations.
Agenda:
• Catalyst
• Bubble Gum Lab
• Mole Quiz #2 &
Chemical Reactions
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 = 0.015 mol
342 g
Objective: I can
Bubble Gum Lab
balance chemical
equations.
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.
Agenda:
• Catalyst
• Bubble Gum Lab
• Mole Quiz #2 &
Chemical Reactions
Objective: I can
balance chemical
equations.
Agenda:
• Catalyst
• Bubble Gum Lab
• Mole Quiz #2 &
Chemical Reactions
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.