Ozone Casts A Shadow in UV Light
Description: Ozone gas is produced by a spark discharge inside a condenser. When UV light is projected on to the ozone gas against a fluorescent background, it casts a shadow.
This demonstration is available on video and JCE Software “Chem Demos” laser disc.
Source: UW Card Catalog
Year: N/A Vol: N/A Page: N/A
Keywords: Oxygen, Allotrope, Ozone, UV Light, Physical Properties, Shadow
Rating: 
Hazard: High
- Skin irritation
- Serious eye damage
- Acute toxicity hazard – inhalation
- Oxidizer
- Mutagenicity hazard
- Acute asthma toxicity
- Electric shock hazard
- Burn hazard
Effectiveness: Good
- Good connection from demo to course material
- Contrast of systems is clear
- Time to results is low
- Challenges preconceived notion
- Mild effects are seen by audience
- Results are observable with guidance
Difficulty: High
- Prior training required
- Demos at nonstandard conditions – high voltage
- Complex manipulations in sequence
- Moderate reliability
- Exposure to toxic gases
Safety Precautions:
- High voltage in use
- Avoid visual exposure to UV light
- Eye protection required
- Gloves required
- Lab coat recommended
- Use downdraft hood or fume hood
- Perform in well-ventilated area
- UL approved three-prong plug and outlet is required
- Avoid exposure to product gas
Class: Bonding, Groups VIA and VIIA (16 and 17)
Division: General, Inorganic Chemistry
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