The result will usually be that the vinegar cleans the pennies better, demonstrating that a lower-pH solution is better at cleaning discoloration due to oxidation. The volume of liquid and the material of the penny are both controlled variables in this experiment. This experiment is especially good for teaching the concept of a controlled variable if you include a third variable -- how dirty the pennies are.
1 doctor agreed: Yes: Pinworm symptoms can include gastrointestinal upset, anal or vaginal itchiness, loss of appetite, difficulty sleeping, irritability, restlessness. Untreated pinworm infection can lead to weight loss, diarrhea, genital rash, urinary incontinence and vaginal discharge.
Back Links (pages that link to this page). Irritable Bowel Syndrome Neutropenic Colitis Pelvic Inflammatory Disease Acute Pelvic Pain in Women Whipworm Appendicitis Acute Abdominal Pain Causes in Adults Pediatric Abdominal Pain Infectious Diarrhea Causes Risk Management.