Download Evidence of chemical reactions indicates that

DO-NOW
8th Grade Science
Volume 0
Use complete sentence and complete your Do Now in your comp book.
Georgia was absent last week. Please write her a text explaining how to find
density. Include the formula and the names of the tools you need.
Today’s Schedule
1. Do-Now
2. Finish Density Lab
3. Density Practice/Check
4. Microchemistry
8th Grade Science
Objectives:
Today we will…
6.6 (B) calculate density to identify an
unknown substance
8.5 (E) investigate how evidence of chemical
reactions indicate that new substances with
different properties are formed
Dark Matter
Voice Level 0
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8th Grade Science
Take 5 minutes to finish your density lab.
Please double check your calculations.
Show all work.
When you are done begin on the Density
Practice.
8th Grade Science
Observing Chemical Reactions
Observing Chemical Reactions
Chemical A
Cobalt Nitrate
Cobalt Nitrate
Calcium
Carbonate
Sodium
Bicarbonate
Chemical B
Ammonium
Vannidate
Na3PO4
H2O
Acetic Acid
Observations
before and
after.
8th Grade Science
Evidence of Chemical Reactions
1.
2.
3.
4.
8th Grade Science
Evidence of Chemical Reactions
1.
2.
3.
4.
Gas formed (bubbles/odor)
Color Change
Heat absorbed or released (gets hot or cold)
Precipitate formed (mix two liquids and solid
forms)
Evidence of chemical reactions indicates that
new substances with different properties are
formed.
8th Grade Science
Exit Ticket
Complete the following on the sticky
note at your desk.
You know a chemical reaction has
happened if you observe…
1.
2.
3.
4.
Today’s Schedule
1. Do-Now
2. Finish Density Lab
3. Density Practice/Check
4. Microchemistry
8th Grade Science
Objectives:
Today we will…
6.6 (B) calculate density to identify an
unknown substance
8.5 (E) investigate how evidence of chemical
reactions indicate that new substances with
different properties are formed
Dark Matter
8th Grade Science
Observing Chemical Reactions
Conclusion:
Today we investigated chemical reactions.
In our experiment we observed…
The most interesting thing was…
One question that I still have about chemical reactions is…
Draw/color a picture showing what we learned
today.
8th Grade Science
Work with your shoulder
partner.
1. Underline:
Physical Changes
Chemical Changes
2. Write evidence for a
chemical change. (page 11)
8th Grade Science
I know a chemical change has taken place when
I observe…
Physical Changes
Illustration:
Chemical Changes
8th Grade Science
Today’s Schedule
1. Do-Now
2. Microchemistry
3. Cornell Notes
4. Going on a Camp Out
5. Smores
Objectives:
How did we…
8.5 (E) investigate how evidence of chemical
reactions indicate that new substances with
different properties are formed
Dark Matter