Lab #1: Types of Chemical Reactions
Week 23- Chemistry
DO NOT WRITE ON THIS SHEET!!!
In the following lab you will:
 Follow a written procedure for a lab
 Make careful GOOD observations based on ONLY your senses
 Identify the type of reaction that occurs
 Predict the products of the chemical reaction that occurred
Purpose: to identify and classify chemical reactions based on the five types of chemical
reactions.
Materials: 5 test tubes, test tube rack, spatula, aqueous potassium chromate (K2CrO4(aq)),
aqueous copper nitrate (Cu(NO3)2(aq), aqueous potassium iodide (KI(aq)), aqueous lead nitrate
(Pb(NO3)2(aq)), solid tin (Sn(s)), hydrogen peroxide (H2O2), aqueous copper sulfate
(CuSO4(aq)), solid zinc (Zn(s)), solid manganese dioxide (MnO2(s)), hydrochloric acid (HCl),
2 wood splints, tea candle.
**NOTE: DO NOT CONFUSE COPPER NITRATE WITH COPPER SULFATE READ
LABELS CAREFULLY!!!!!!!!!!
**CAUTION: GLOVES MUST BE WORN BY THE PERSON(S) HANDLING THE
CHEMICALS!!!!!
Procedure (FOLLOW STEPS VERY CAREFULLY OR YOU WILL LOSE POINTS):
1) Solid Tin metal (Sn(s)) and aqueous Copper (II) Sulfate (CuSO4). Fill one test tube
about one-forth of the way with copper (II) nitrate solution. Add one pellet of Tin (Sn) to
the solution. After 5 minutes, record your observations in the table provided.
2) Aqueous Copper (II) Nitrate (Cu(NO3)2) and aqueous Potassium Chromate
(K2CrO4). Fill a new test tube one-forth of the way with copper (II) nitrate solution. Add
5 drops of potassium chromate solution to the test tube. Record your observations.
3) Solid Zinc (Zn) metal and hydrochloric acid (HCl). Fill a new test tube about one-third
of the way with hydrochloric acid. Place the test tube IN THE TEST TUBE RACK and
add two pellets of zinc. While the gas is still forming light a wood splint with the burning
candle and place the BURNING wood splint slightly inside the test tube (right below the
opening). Record ALL observations.
4) Aqueous potassium iodide (KI) and lead nitrate (Pb(NO3)2). Fill a new test tube about
one-forth of the way with potassium iodide solution. Add 5 drops of lead nitrate to the
test tube. Record your observations.
5) Action of a catalyst (MnO2) on hydrogen peroxide (H2O2). Fill a new test tube about
one-forth of the way with hydrogen peroxide. Place the test tube in the test tube rack then
have your instructor place a VERY small amount of the SOLID manganese dioxide
(MnO2) in the test tube with a spatula. While the gas is still forming light a new wood
splint with the burning candle. BLOW the wood splint OUT. Insert a GLOWING wood
splint slightly into the test tube (right below the mouth). Record ALL observations.
Lab #1: Types of Chemical Reactions
Week 23- Chemistry
Reaction
1) Sn + CuSO4
Name: ___________
Period: ____________
Date: ______________
Observation
Reaction Type
2) Cu(NO3)2 + K2CrO4
3) Zn and HCl
4) Pb(NO3)2 + KI
5) H2O2
Analyses and Conclusion: (turn in tomorrow along with observation sheet)
1) Write an equation for each of the reactions observed. Indicate the state (s, l, g, aq) for
each reactant and product THEN balance the equation. (make sure you know the charges
of all ions so your PRODUCTS are correct)
2) Write a MEL-Con conclusion paragraph about the lab that took place:
 M = The 5 main types of chemical reactions are…
 E = define the types of reactions and how they are different
 L = discuss the reaction in the lab (be specific)
 Con= wrap up your paragraph about the 5 types of chemical reactions