Why do nonmetals gain electrons? Why is IUPAC nomenclature important? What is the relationship between the stable octet rule and the electron configuration of the outer most electron shell of an atom ? Does the octet rule only apply to elements belonging to Groups 1, 2, 13 to 18, since th...
Will gold ever lose its value? Gold's value rises and falls just like any other investment. Whilegold will almost certainly never gain nor lose relative valueas quickly as penny stocks and dot-com initial public offerings, gold's price movements can still convey information. What is the old ...
(P), and sulfur (S) are also consistent with other ingredients from toothpaste. The toothbrush used for 7 days (S4) only had 0.78% ash; this just slightly exceeds the new control toothbrush (S1). Thus, the TGA and EDS data suggest that the intermediate use toothbrush (S4) bristles ...
Several conditions contribute to the bristles becoming hard over time. The mechanical action from brushing, in the presence of a toothpaste coating, causes the Nylon bristles to begin to fray and break down. Over time, this can cause the bristles to become adhered to one another and renders th...