Chemistry Inside of Us

1. Familiarize yourself with the pH scale, what is its importance for the human body, especially for the acidic environment in the stomach.
2. In front of you are several household objects that we use in our daily life. Make an estimate of the pH of the object.
3. Measure its acidity with the pH strips provided and record your observations, noting whether the substances are acidic, neutral or alkaline.
4. Discuss the results in class, focusing on the acidity of the stomach and the potential effects of the substances on the body.
5. Did your predictions match the measurement results?

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