Shandchem:
Apparatus used to demonstrate condensation when the moist air in the glass bottle (demijohn) expands (pressure changes from 10 psi on guage to ambient pressure).
Shandchem:
Cloud in a bottle Step 3: stop squeezing the bottle which results in a decrease in temperature and condensation results in cloud formation
Shandchem:
Cloud in a bottle Step 1: insert smoking splint momentarily in the bottle then withdraw and screw on lid
Shandchem:
Condensation results when the moist air in the glass bottle (demijohn) expands (from 10 psi to atmospheric pressure).