Graph. The graph shows energy over the course of a chemical reaction. At the start of the reaction, the reactants have a medium amount of energy. Then the level of energy peaks, and starts to quickly decline. The product of the reaction has a low amount of energy.

Based on the information in the graph, choose the statement that best describes the reaction it depicts.

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.