Download Chemical Reaction Review

Chemical Reaction Review Homework
Name _____________________________________________________
Hour ______
Benchmark A5 Assessment: Recognize that a chemical reaction has taken place
Lt 1.
Distinguish between physical and chemical change
Label the following as physical or chemical changes
1.
Lt2.
Fry an egg.
_____________________
5. Burning garbage.
_____________________
2. Fingernail polish evaporating.
_____________________
6. Sour cream getting moldy. ______________________
3. Ice cream melting.
_____________________
7. Gas produced from baking soda & vinegar. __________
4. Cutting a log in half.
_____________________
8. Crushing a Styrofoam cup. ______________________
List evidence of chemical reactions
Adam & Jamie (from Mythbusters) add mentos to a Diet Coke. It produced a fountain of foam. Answer the questions that follow.
_____ 9. Is there evidence that a chemical reaction has taken place?
a. Yes
b. No
c. Not enough information
_____ 10. What is the evidence?
a. Temperature change
b. Unpredictable color change
c. Change in state
d. No evidence
True or False? (for evidence of a Chemical Reaction)
_____ 11. When heated, a purple gas formed.
_____ 12. Bubbles form when you wash your hands with soap.
_____ 13. Slime is fluorescent under uv light.
Lt3. Identify the model
of matter
14. _____________________ is anything that has mass & takes up space.
15. What are the 4 phases of matter?
16. A good scientific __________________________ allows predictions to be made, suggests experiments to try and explains
observations.
Lt5.
Define/prove Law of Conservation of Matter.
17. The Law of ____________________________________ states that matter cannot be created nor destroyed, only changed
in form.
18. Label the REACTANTS & PRODUCTS below.
Baking Soda
+
Vinegar
_________________________
---->
carbonic acid +
acetate
+
H2 0
+
_______________________________
CO2