Vocabulary: acid, acidic, alkaline, base, indicator, neutral, pH Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
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?
B. What does it feel like if lemon juice gets in your eye?
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?
B. What does soap taste like?
C. What does it feel like if soap gets in your eye?
Gizmo Warm-up