All Science Fair Projects

Over 1000 FREE Science Fair Project Ideas!

The Effect of Acids and Alkalis on Bacterial GrowthFeatured science projectScience project video

Observation

The results obtained are recorded in the table below.

 

Microccus Luteus
Concentration of acid (%) Diameter of zone of inhibition (mm) Concentration of alkaline (%) Diameter of zone of inhibition (mm)
2 3.3 2 2.4
4 5.5 4 4.6
8 10.1 8 10

 Control for Microccus Luteus: 0mm 

Serratia marcesceus
Concentration of acid (%) Diameter of zone of inhibition (mm) Concentration of alkaline (%) Diameter of zone of inhibition (mm)
2 4.6 2 3.1
4 6.7 4 3.7
8 12.3 8 7.8

 

See our all-time most popular science projects
Search science fair projects Browse science fair projects
popular science fair projects
Complexity level:
7
Project cost ($):
20
Time required:
1 hour to prepare, 24 hours incubation period, 30 minutes to observe and record findings.
Material availability:
All materials should be provided by the biology laboratory. However, students should prepare their own goggles and lab coat.
Safety concerns:

Safety concerns: All biohazard material should be disposed into the sharps bin. Students must put on safety goggles and lab coat at all times throughout this experiment. Teachers must be on standby especially when students are removing the bacteria culture out of the bottle. Disinfectants must also be prepared in case of any bacteria culture spills.