Remove the bowl from the flame and let it cool down.
Observation: After sometime we can see that wax again changes to solid on cooling.
Conclusion: We can say that melting of wax is a temporary change. Change from solid to liquid called state change.
Q2.In hot water, the food coloring diffuses (spreads out) through the water quickly. In cold water, the food coloring diffuses (spreads out) through the water slowly. The hot water causes the food coloring to diffuse faster. This faster movement allows diffusion to occur more quickly.
Q3. In shallow water, on the other hand, floating particles like sand, silt, algae, and corals absorb light wavelengths differently than water, which can change the color of the water we see. Basically, says NASA, "the more phytoplankton in the water, the greener it is the less phytoplankton, the bluer it is."
Q4.The food coloring will mix the fastest in the hot water because the molecules are moving fast due to their increased thermal energy. These fast-moving molecules are pushing the molecules of food coloring around as they move, causing the food coloring to spread faster.
Q5.Observable properties are characteristics or things about materials or objects that we can describe using our five senses. Color, texture, hardness, and flexibility are all things we can determine with our senses.
