Acids and Bases- Food is Acidic: Cleaners are Basic

Food is Acidic; Cleaners are Basic

Description: pH of household chemicals is measured with either indicators or a pH meter.

Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry

Year: 1989   Vol: 3   Page: 65

Keywords: Foods, Cleaners, Shampoos, Acids, Bases

Ratings:

Hazard: Medium

• Acute toxicity hazard
• Electric shock hazard
• Skin corrosion hazard
• Aquatic toxicity
• Corrosive to metals
• Inhalation hazard
• Serious eye damage

Effectiveness: Average

• Results are observable with guidance
• Somewhat connected conceptually to course material
• Mild effects are seen by audience
• Time to results is high
• Secondary observations
• Good reliability

Difficulty: Medium

• Use of mildly reactive substances
• Cross-contamination possible
• Some concerted or timed manipulations
• Experiments in which a display is used
• Multi-step procedures

Safety Precautions:

• Eye protection required
• Gloves required
• Use of UL approved three-prong plug and outlet required
• Absorbent materials on hand
• Perform in a well-ventilated area
• Avoid exposure to mists, gases, and droplets
• Prevent release of reagents to the environment

Class: Acids and Bases

Division: General

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