By: Seth T and Daniel P

Double Replacement

This is a double replacement reaction. This is what the test tube looked like with only the PbNO3.



In this reaction, we put hot water in a beaker. After that, we dropped 4 tablets of NaHCO2 in, two at a time. They fizzed and created gas bubbles, and the substance got cooler. We wafted for a scent so we didn't inhale any possibly dangerous chemicals.