A way we can reduce disadvantages of human made materials is simply by finding new uses for them such as when plastic is molded and used for a container of a liquid.
Explanation:
The water must be cooled. Cooling water means the kinetic energy of the water molecule is reduced. Bombardment with the solute molecules reduces. In addition, The inter-molecular spaces between the water molecules reduce and therefore the number of solutes that can be accommodated in the inter-molecular spaces reduces. This is how saturation point is reached. Therefore as you coll the solution, the solute molecule precipitate from the water.
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Competence is the answer to this question
Answer: By losing its two outermost electron
Explanation:
Calcium is a element that belongs to group 2 in the periodic table. It has an atomic number of 20, and an electronic configuration of 2, 8, 8, 2.
Hence, to form an octet structure, it gives off its two electrons as shown below:
Ca <----> Ca2+ + 2e-
Thus, by losing its two outermost electrons, a positively charged calcium ion (Ca2+) is formed
