Investigating the Properties of Ph

Investigating the Properties of pH The manufactures claim is that Sensodyne toothpaste micro hardens tooth enamel to help protect against the make of acid wear, helps stop the twinges of pain from sensitive teeth formulated with low abrasivity, apathetic pH and gentle yet effective cleaning system. To find bring out if the manufactures claim on Sensodyne toothpaste is the correct direct of pH. I expect the Sensodyne toothpaste to be a neutral pH level as the manufactures claim that this products pH level is neutral. This would be indicated by a level of pH 6 and 7. The equipment needed for this practical * Sensodyne (toothpaste) Universal indicator * Universal paper * pH meter * Petri debaucher x 3 * Measuring cylinder x 6 * Wooden stick * Distilled peeing * Tap water * Ruler Method 1. Test the distilled water and tap water for the pH level to see if it were neutral so it wouldnt make a difference to the results. 2. Set up 3 petri dishes and 3 measuring cylinders 3. Measure 10m ls of tap water. Add water to the petri dish and amplify 5cm of Sensodyne (toothpaste) into each petri dish and double up this step 3 times. 4. Measure 10mls of distilled water and add to the measuring cylinders as well as adding 5cm of Sensodyne (toothpaste) and repeat this step 3 times. . Mix the substances together with the wooden stick. 6. Put universal indicator (liquid) into the petri dish repeat this step 3 times. Record the results from each petri dish. 7. Put universal indicator (paper) into the measuring cylinder repeat this step 3 times Record the results from each measuring cylinder. 8. Set up pH meter, Put the pH meter into the measuring cylinder record the pH reading and repeat this step 3 times for a reliable. Results Table Universal Indicator Universal Paper pH Meter Test 1 pH6 6 7. 0 Test 2 pH6 6 6. 99 Test 3 pH6 6 7. 09 Photographic evidence of experiments Before After Before After Discussion * The results show pH of the toothpaste is neutral according to the pH meter, and slightly acidic according to the paper and indicator.The pH was discovered to be between 6 and 7 in all the footraces make * The manufacturers claim was the pH level of the sensodyne (toothpaste) was neutral. My hypothesis was that the toothpaste was pH neutral and this was support by the results. * I compared distilled water and tap water because of the different chemicals mixed with the water, exclusively the results showed no difference so it didnt affect the pH. The pH meter showed little varying but not too much this could be that the pH meter is out or that there could be something wrong with the meter because with my supported evidence its unlikely to be wrong.To improve this experiment would be to test with more than one pH meter to see if theres a difference in comparison. Otherwise it may be more effective if there were more tests done for more support towards the result. * My independent variable is the sensodyne (toothpaste) because in every experiment I u sed the same amount of sensodyne. The hooklike variable was the pH levels were I did not have control over what the pH level would indicate. This is the reason the results are reliable because I repeated the move three times in each test and continued to get the same results.This experiment could be improved by obtaining samples of toothpaste from a variety of locations. This give identify and inconsistencys in the product itself. Conclusion * The experiment found that the manufactures claim of pH is correct and it is a neutral pH with supported evidence. Teeth would be affected by acidic toothpaste or alkaline toothpaste. Therefore a pH between 6 and 7 is an appropriate toothpaste . This sensodyne (toothpaste) is designed to help people with sensitive teeth.