Title

Test for corrosion of iron in yeast and yogurt

School Name

Southside High School

Grade Level

12th Grade

Presentation Topic

Chemistry

Presentation Type

Non-Mentored

Abstract

In large factories today corrosion of the metals used is a serious issue because of the need to replace parts after they have corroded. We designed this lab to determine the effects that different biological substances have on the percentage of iron that corrodes. It was hypothesized that the bacteria present in the yeast will decrease the percent corroded because it is a green inhibitor that can decrease the amount of corrosion. The iron that was put in yogurt was hypothesized to also increase the amount corroded. The corrosion was compared to iron that was placed in a beaker with only the air around it. To determine the percent that has corroded we pre-weighed the iron, put it in the substance for 14 days, and found the new weight. With this experiment we hope to determine whether the bacteria release anything that may help or hinder the formation of rust on the iron.

Start Date

4-11-2015 11:15 AM

End Date

4-11-2015 11:30 AM

COinS
 
Apr 11th, 11:15 AM Apr 11th, 11:30 AM

Test for corrosion of iron in yeast and yogurt

In large factories today corrosion of the metals used is a serious issue because of the need to replace parts after they have corroded. We designed this lab to determine the effects that different biological substances have on the percentage of iron that corrodes. It was hypothesized that the bacteria present in the yeast will decrease the percent corroded because it is a green inhibitor that can decrease the amount of corrosion. The iron that was put in yogurt was hypothesized to also increase the amount corroded. The corrosion was compared to iron that was placed in a beaker with only the air around it. To determine the percent that has corroded we pre-weighed the iron, put it in the substance for 14 days, and found the new weight. With this experiment we hope to determine whether the bacteria release anything that may help or hinder the formation of rust on the iron.