Post on 01-Jan-2016
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Evidence of a Chemical Reaction Lab
Used for Physical Science:Mrs. DeLisa Whittaker
Mr. Bret RogersMs. Jelia Day
Sign I: Mg metal + HCl
Describe what happens
http://wiki.answers.com/Q/What_happens_when_you_put_magnesium_and_hydrochloric_acid_together
• _______________________
______________________________________________
Mg + HCl ____ + ____
Sign I: Mg metal + ZnSO4
Describe what happens
http://wiki.answers.com/Q/What_happens_when_you_add_magnesium_to_zinc_sulfate
• _______________________
______________________________________________
Mg + ZnSO4 ____ + ____
Sign IIDescribe the colors observed when you
mix the following chemicals:
• a. 0.1 M NaOH with phenolphthalein
___________________
Sign II:Describe the colors observed when you
mix the following chemicals:
• b. H2O & dry ice with universal indicator
___________________
Describe what happens
http://answers.yahoo.com/question/index?qid=20081004132153AAO7oVv
_____________________________________________________________________
Pb (NO3)2 + KI ___ + ___
Sign III: Pb(NO3)2 + KI
Sign III: Cu +AgNO3
Describe what happens
http://answers.yahoo.com/question/index?qid=20061126233438AATU5lD
http://www.bing.com/images/search?q=Cu+%2bAgNO3&view=detail&id=F381852F0C4151929124519F54B57A6CCBE50496&first=1&FORM=IDFRIR&qpvt=&adlt=strict
___________________________________________________________________________
Sign IV: demo by teacher
What is being produced? What is being given off?
Pictures of flames that produce heat and light from lab.
Now summarize what the four main signs are that a chemical reaction has taken place!
Make sure you have filled out all blanks on your lab sheet & turn in
your lab sheet for a grade!