1. Coffee powder will melt to water
2. Coffee powder will fast melt in hot water than cold water
3. Coffee powder melted in water because coffee powder is a soluble material.
4. salt will take a little time to melt in vinegar.
5.-6. salt has a lot of potential but vinegar have Experiments with salt and vinegar are inexpensive. Using these experiments to entertain and teach children provides a visual avenue into chemistry. Experiments with salt and vinegar are simple to do and can capture a child's attention. Chemistry lessons are explained, and the hands-on approach uses more of a child's senses than just hearing. The lesson will be more memorable with the addition of touch, smell and taste.
7.oil and water will not be able to mix.
8. -9. in this activity you combined oil and water then observed how adding dish detergent changed the properties of this mixture. First you should have noticed that when you added the oil to the water they did not mix together. Instead the oil created a layer on the surface of the water. This is because oil is less dense than water and therefore it floats to the surface. When you shook the Oil+Water bottle you might have noticed the oil broke up into tiny beads. These beads, however, did not mix with the water. After you let the Oil+Water bottle sit for 10 minutes you should have observed the oil and water starting separating again almost immediately, and after another 10 minutes there was once again two distinct layers in your bottle.
10-11-12. flour does not dissolve in water as it consists of starch granules, proteins and lipids that are all insoluble in water due to their molecular structure. Instead of dissolving in water, flour will absorb water to form a sticky suspension.
13-14-15.When baking soda is mixed with vinegar, something neWhen baking soda is mixed with vinegar, something new is formed. The mixture quickly foams up with carbon dioxide gas. If enough vinegar is used, all of the baking soda can be made to react and disappear into the vinegar solution. pa brainlest
