Answer:
1. gravel of the sand: a part is dissolved and the remainder is grouped at the bottom of the beaker.
2. drop of sunflower oil: It is not absorbed and heaps on the surface of the water contained in the beaker.
Explanation:
Gravel of the sand is a polar substance. This means that this substance has the ability to dissolve and mix with water in a system in which both were placed together, such as a beaker, for example. However, the beaker limits the amount of water, which limits its ability to dissolve polar substances. Therefore, depending on the quantity, the gravel of the sand, when placed in a beaker with water, will dissolve, in parts, what is not dissolved will accumulate in the bottom of the beacker, because the gravel of the sand is denser than the water.
With the drop of sunflower oil the exact opposite happens. This is because drops of oil are nonpolar substances, which means that they do not have the ability to be dissolved in water. This means that when dropped into the beaker with water, the drop of sunflower oil will not dissolve, but will pile up on the water surface, because it is less dense than water.
Biogeography is the study of geographical distribution of fossils, various species (plants and animals) and ecosystems throughout geological time and space
The muscular system allows for movement within the body, for example, during digestion or urination. Smooth muscles in the gastrointestinal or GI tract control digestion. The GI tract stretches from the mouth to the anus. Food moves through the digestive system with a wave-like motion called peristalsis.
Carbon
<span><span>A student believes that a beverage improves memory. Two groups of students will be given a beverage before they take a test in class. </span>
Which of these is the best way for the student to design the experiment?
<span><span>A.<span>One group should be given the beverage, the other group should be given water.
</span></span><span>B.<span>One group should be given beverage, the other group should be given diet version of the beverage.
</span></span><span>C.<span>One group should be given a math test, the other group should be given a science test.
</span></span><span>D.<span>One group should be given the beverage, the other group should be given beverage diluted in water.
</span></span></span></span>
Answer:
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