Answers

2014-11-20T19:59:28+08:00
1. Vinegar - 2.4 pH
2. Toothpaste - 6.8 pH
3. Tap Water - 7 pH
4. Bath Soap - 12.38 pH
3 3 3
2014-11-22T18:19:14+08:00
vinegar,toothpaste,tap water,bath soap
1 2 1