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HW: Chemistry 1 Exam Thursday, 3/10
Current Events #17-20 on Friday. Meet in Computer Lab
tomorrow for Castle Learning GRADED review for test.
Do Now:
3/7/16
1) Turn in Extra Credit (due TODAY)
2) Take out Lab Packet HW
3) Complete the Physical or Chemical Change
handout
Current Events
1.
2.
3.
4.
__
P A rock is chopped up into small pebbles.
__
C Cake mix, water, eggs, and oil are baked
__
P Oil and water are shaken together (dressing)
__
P A glass is dropped and broken
P Water is put into the freezer to make ice
5. __
6.
7.
8.
9.
__
C We use detergent/bleach to wash/clean clothes.
C Your mother cooks scrambled eggs
__
P Modeling clay is shaped into a vase
__
P Cream is whipped with air to make whipped
__
cream
10.__
C Gasoline is burned in a car engine
Physical and Chemical Changes Results!
Task
1. Type of Change (Physical or Chemical)
2. Reason/Evidence
Baking soda and vinegar
1. Chemical change
2. Gas release/Fizzing
Potato Cutting
1. Physical change
2. No new substances were produced
Potato and Iodine
1. Chemical change
2. Iodine added to the potato turned it purple/black
(color change)
Salty Water
1. Physical change
2. Salt dissolved in water-no new substances
Glow Stick
1. Chemical change
2. Cracking releases 2 chemicals that mix
to produce a glowing light
1. What did you think!??!
2.
made
Insta-snow
Conclusion Questions
• Discussion
Physical and Chemical Changes
Classwork
Use Page 8 in your Lab
Manual to help you
identify the changes.
1.
2.
3.
4.
5.
6.
__
P Water boiling
__
C Burning hair
__
C Temperature of a test tube gets colder
__
P Molding clay
__
C Light given off by a glow stick
C Cooking eggs
__
7. __
C Gas produced
P Stirring milk in coffee
8. __
9. __
P Freezing water
10.__
P Breaking glass
11.__
P Dissolving CO2 in soda
12.__
C Lighting a Bunsen burner
13.__
P Mechanical digestion
14.__
C Cell respiration
C Adding Phenolphthalein to sodium hydroxide
15.__
16.__
P Pounding Gold into different shapes
17.__
C Light sensitivity (hydrogen peroxide)
H2O2
Demonstration # 1:
Tearing Paper
What type of change did I witness?
Physical
Summary:
We tore a piece of paper into little
pieces. Each piece was still paper!
Demonstration #2:
Favorite Drinks… or are they??
What type of changes did I witness?
Chemical
Summary:
We combined chemicals to create
common looking new substances
that were really not what we
thought they were.
Demonstration # 3:
Magnesium Ribbon
What type of change did I witness?
Chemical
Summary:
We added heat to a ribbon of
magnesium and created a new
substance, and VERY bright light.
Demonstration # 4:
Copper Chloride & Aluminum
What type of change did I witness?
Chemical
Summary:
We put a chemical into a test tube
and created a new substance when
it combined with aluminum.
Demonstration #5:
Potassium Permanganate & Glycerin
What type of change did I witness?
Chemical
Summary:
We combined chemicals to create a
new substance, smoke and flames.