what happened to the detergent film in the mouth of the bottle when in the hot water?what is the reason behind this?what happened to he detergent film in the mouth of the baottle when placed in the cold water?what is the reason behind this?how does this activity simulate the effect of heat on the particles of matter?
Answer (1)
1. The detergent film bulged outward or expanded.Reason:When the bottle is placed in hot water, the air inside the bottle heats up. Heated air particles move faster and spread apart, causing the air inside to expand. The expanding air pushes on the detergent film, making it bulge outward.2. The detergent film moved inward or collapsed.Reason:When the bottle is placed in cold water, the air inside the bottle cools down. Cold air particles move slower and come closer together, so the air inside contracts. This lowers the pressure inside the bottle, pulling the detergent film inward.3. This activity demonstrates that:Heat makes particles move faster and spread apart (expansion).Cold makes particles move slower and closer together (contraction).It shows the Kinetic Molecular Theory: the movement of particles depends on temperature.---✅ In short:Hot water → film bulges outward → air expandsCold water → film moves inward → air contractsLesson → Heat affects particle motion, leading to expansion or contraction.
