July 29, 2018

Many PhD/graduate applicants stress about the GRE a lot more than they should. It seems like a daunting task with high stakes (and to some extent certainly is), but applicants should be aware of its role before dedicating too much of their time to it. The most important thing you should know is that the GRE is a small part of your overall application. While it’s good to do well, after a certain threshold, focus on stren...

July 12, 2018

Which statement describes a chemical property of iron? (1) Iron oxidizes. (2) Iron is a solid at STP. (3) Iron melts. (4) Iron is attracted to a magnet. Answer and Explanation: Let's first begin by defining a chemical property. Chemical property is a characteristic observed during a chemical reaction (during a reaction the identity of the substance changes). Therefore, we have to look for anything that would change...

July 2, 2018

All elements on the periodic table (except H and He) follow the octet rule that states that atoms want to have an octet (eight) electrons in their outermost shell. From the question we know that the element is nonmetallic which means its on the right side of the periodic table. It needs to gain two electrons to be happy and fill its octet, which means it

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