Grab binders and handouts & begin the Do Now
4/11 Do Now
1. Label each of the following
compounds as either IONIC or
COVALENT
- NaCl
- KI
- CN
- MgBr2
- Al2O3
- SiO2
2. Use Lewis Dot Structures to draw
the covalent compound SiO2
O Si O
While watching…
• Set up the following T-chart:
What happened?
How do I know that
happened?
Reactions are EVERYWHERE!
Jot down your thoughts…
• What happens during and after you eat a
meal?
• How do you know that has happened? What is
your evidence?
Chemical & Physical Properties & Reactions:
Key Point # 1
Physical Properties
Chemical Properties
-Anything you can SEE,
-Reactivity
FEEL, SMELL, MEASURE
H2O2 reacts w/catalase
Odor
H2O does not
Mass
Volume/Shape
-Magnetic video
Texture
Melt, Boil, Freeze Temps. - Acidity
State of matter
pH scale
Color
Key Point # 2
Physical Rxns
Chemical Rxns
-
Only 1 compound involved - Something new is created
(start and end w/ same
compound)
- Irreversible
-
Reversible
-
Changes state of matter
-
No bonds breaking &
reforming
H2O(l)  H2O(g)
- Break & reform bonds
H2O2  H2O + O2
INDICATORS:
- Create something new
- gas evolution
- Temp change
- Color change
- Light emission
Mini-lab Stations
- MUST wear goggles & gloves
- 6 min at each station
- Make sure to CLEAN UP before moving to the next
station (even if not completely finished with write
up for that lab station)
- Today’s Exit Ticket: complete write ups for each
lab station and check off with Ms. Herndon
Exit Ticket 2
Directions:
You have 10 minutes to complete the Exit
Ticket to the best of your ability. You MAY NOT
use notes, but you may use a Periodic Table if
needed. When finished submit to the class
bucket.