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Chemistry > GIZMOS > GIZMO Student Exploration: pH Analysis (All)

GIZMO Student Exploration: pH Analysis

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1. Acids are substances that produce hydrogen ions (H + ) when dissolved in water. Lemon juice is an example of an acid. A. What does lemon juice taste like? Lemon juice has a sour taste. This is ... because lemons contain citric acid, and lemon juice is predominantly made out of lemons. Acids and foods with acid in them usually taste sour because of the concentration of hydrogen ions in them. Since the tongue gains ions, the taste buds consider it sour, and we taste any foods with acid in them as sour. That is why lemon juice, which contains citric acid, is sour. B. What does it feel like if lemon juice gets in your eye? Lemon juice burns and severely irritates the eyes. This is because lemon juice contains citric acid, which is very mildly corrosive. While citric acid barely irritates the skin, more sensitive areas such as the eyes can be harmed by it, which in turn causes irritation and a burning sensation. 2. Bases are substances that produce hydroxide ions (OH - ) when dissolved in water. Hand soap is an example of a base. A. What does soap feel like? [Show More]

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