Student Name:_____________    Class:_____

 

 

 

 

 

 

Acid Rain

 

Laboratory Investigation

Student Materials


 

 

Acid Rain

 

Student Materials

 

Acid rain is a major environmental issue throughout Connecticut and much of the United States.  Acid rain occurs when pollutants, such as sulfur dioxide from coal burning power plants and nitrogen oxides from car exhaust, combine with the moisture in the atmosphere to create sulfuric and nitric acids.  Precipitation with a pH of 5.5 or lower is considered acid rain.

 

Acid rain not only affects wildlife in rivers and lakes but also does tremendous damage to buildings and monuments made of stone.  Millions of dollars are spent annually on cleaning and renovating these structures because of acid rain.

 

Your Task

 

Your town council is commissioning a new statue to be displayed downtown.  You and your lab partner will conduct an experiment to investigate the effect of acid rain on various building materials in order to make a recommendation to the town council as to the best material to use for the statue. In your experiment, vinegar will simulate acid rain.

 

You have been provided with the following materials and equipment.  It may not be necessary to use all of the equipment that has been provided. 

 

 

 

Suggested materials:

                                                                                    Proposed building materials:

                                               

containers with lids                                                     limestone chips

graduated cylinder                                                       marble chips

vinegar (simulates acid rain)                                        red sandstone chips

pH paper/meter                                                            pea stone

safety goggles                                                            access to a balance                  

                                   

 

 

 

                       

 

              

 

 

 

 

 

Designing and Conducting Your Experiment

 

 

1. In  your words, state the problem you are going to investigate.  Write a hypothesis using an “If …  then … because …” statement that describes what you expect to find and why.  Include a clear identification of the independent and dependent variables that will be studied.

 

2. Design an experiment to solve the problem.  Your experimental design should match the statement of the problem and should be clearly described so that someone else could easily replicate your experiment.  Include a control if appropriate and state which variables need to be held constant.

 

3. Review your design with your teacher before you begin your experiment. 

 

4. Conduct your experiment.  While conducting your experiment, take notes and organize your data into tables.

 

Safety note: Students must wear approved safety goggles and follow all safety instructions.

 

 

When you have finished, your teacher will give you instructions for cleanup procedures, including proper disposal of all materials.

 

                       

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 Communicating Your Findings

 

Working on your own, summarize your investigation in a laboratory report that includes the following: