Question

Explain why water and petrol disappear if left in separate containers for too long

Answer 1

Water and petrol will both evaporate if left in separate containers for too long because they are both volatile substances. This means that they have a tendency to escape in the form of vapor when exposed to air.

Petrol is a mixture of hydrocarbons that are volatile and will easily evaporate at room temperature. Similarly, water will also evaporate due to its low boiling point and high vapor pressure.

If left in separate containers with no sealing or covering, both water and petrol will gradually evaporate and disappear over time. The rate of evaporation will depend on factors such as temperature, air flow, and surface area exposed to the air.

Therefore, if left for too long without being sealed, both water and petrol will eventually evaporate and disappear from their containers.