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!