1. Creating a Positive Learning Environment for Everyone
Be respectful of your classmates
Save conversation for clicker portions of lecture
Put cell phones in “airplane” mode
Turn off tablets
Close laptops

2. Announcements Scaled exam scores posted.
Get exams back tomorrow in discussion.
Pre-lab due next week in lab (still stoichiometry).
Highest Section was…

3. Clicker #1 What do we mean by “energy”? A) capacity to do work
B) force × distance
C) phase of a substance (s, l, or g)
D) how quickly something is moving

4. Clicker #2 How many of the following are endothermic
Clicker #2 How many of the following are endothermic? (The system is underlined.)
Your hand gets cold when you touch ice.
Water heats up to boiling on the stove.
Water freezes and becomes ice.
Ice cream melts on a hot day.
a) b) c) d) e) 4

5. Clicker #3 Which is lower in potential energy? H2/O2 or H2O A) H2/O2
B) H2O

6. Clicker #4
Which is more stable?
H2/O2 or H2O
A) H2/O2
B) H2O

7. Clicker #5 Which is lower in potential energy and more stable?
unburned match or burned match
A) unburned match
B) burned match