Name____________________________
TYPES OF CHEMICAL REACTIONS LAB
Pre-Lab Discussion Day 1
The majority of chemical reactions can be classified based on the patterns seen in the reactants and the
products that are made. Today you will be investigating two types of reactions:
1. Single Replacement – A reaction between one Element and one Compound that produces a different
Element and Compound
Example:
2. Double Replacement – A reaction between two Compounds that produces two different Compounds.
Example:
Thinking like a scientist, what do you know/understand? What questions do you have?
I know/understand…
Questions I have…
SAFETY:
 Wear safety goggles and aprons at all times when working in the lab.
 Use proper lab safety at all times. Pay attention to SDS symbols.
 Never to smell a chemical directly.
REACTION #1
1. Put a clean, dry test tube in the test tube rack.
2. Add 1 dropper full of HCl
to the tube.
3. Carefully drop a small piece of Zn metal into the HCl in the test tube. Observe and record what happens.
4. Dispose of contents of test tube in the Waste beaker and rinse out test tube.
Reactants:
Words:
Observations of Reactants BEFORE reaction:
Formulas:
Predicted Products:
Words:
Formulas:
Evidence a Chemical Reaction occurred:
Particle Model:
Balanced Chemical Equation:
REACTION #2
1. Put a clean, dry test tube in the test tube rack.
2. Add 1 dropper full of Sodium chloride to a clean, dry test tube.
3. Add 1 dropper full of Al(NO3)3
to the test tube. Observe and record what happens.
4. Dispose of contents of test tube in the Waste beaker and rinse out test tube.
Reactants:
Words:
Observations of Reactants before reaction:
Formulas:
Predicted Products:
Words:
Formulas:
Evidence a Chemical Reaction occurred:
Particle Model:
Balanced Equation:
REACTION #3
1. Put a clean, dry test tube in the test tube rack.
2. Add 1 dropper full of Lead Nitrate
to a clean, dry test tube.
3. Add 1 dropper full of Potassium Iodide
to the test tube. Observe and record what happens.
4. Dispose of contents of test tube in the Waste beaker and rinse out test tube.
Reactants:
Words:
Observations of Reactants before reaction:
Formulas:
Predicted Products:
Words:
Formulas:
Evidence a Chemical Reaction occurred:
Balanced Equation:
Particle Model:
Debrief
1. Is Reaction #1 a single replacement or a double replacement reaction? How do you know?
2. Is Reaction #2 a single replacement or a double replacement reaction? How do you know?
3. Is Reaction #3 a single replacement or a double replacement reaction? How do you know?