Acid Rain
Susan and Steven
Problem: What is the effect of different types of minerals in acidic snow?
Hypothesis: We think that the mineral with the highest pH level will decrease the most acidity in acidic snow.
Materials: melted snow, 6 different mineral samples, electronic balance, 6 containers, pH paper, pestle and mortar.
Procedure:
Step 1: Took some samples of snow and let them melt.
Step 2: Ground up the mineral with the pestle and mortar.
Step 3: Weighed .5 grams of the mineral with an electronic balance and put it into a container.
Step 4: Measured 20 ml. of liquid snow and put it into the container.
Step 5: Took pH reading. Repeat the step 4x, once a day. (First time without the mineral in the liquid snow.)
Step 6: Repeat steps 1-5 with each mineral.
Observations: We observered that the pH level in all of the minerals but salt.
Conclusion: Our conclusion was correct. The mineral with the highest pH level decreased the most acidity.
Application: This experiment shows that a specific mineral could be put into lakes to stop acid rain from polluting the lakes and rivers.
Things that could be done to improve this project are: Have more minerals samples, have more trials for more accuracy, have minerals of different pH levels, set up different testing times (have one set for 1 week and another for 2 weeks to see if the result changes)