When water is sprinkled on a hot pan, it evaporates quickly. The heat causes the water to change from liquid to vapor, which disperses into the air, making it seem like it has disappeared.
Category: Class 6 Science
NCERT Solutions and Important Questions for class 6 Science for CBSE exams 2020-2021.
Discussion Forum Latest Questions
Hand sanitizer disappears as you rub it because it evaporates. The alcohol and other components in the sanitizer change from liquid to vapor due to the heat from your hands, leaving no residue behind.
Water droplets appear on the outer surface of a glass tumbler because the cold glass cools the air around it. This cooling causes moisture in the air to condense into droplets on the glass.
Dew drops are more visible in the morning because overnight cooling causes water vapor to condense on cool surfaces like plants. As temperatures drop, the air’s capacity to hold moisture decreases, forming dew.
The mass of cold water on the digital weighing balance will remain the same. Mass is conserved unless water evaporates or external substances are added. Temperature changes alone do not affect the mass of water.