How are the isotopes of a particular element alike? How is the atomic number of an atom determined? What is curium's atomic mass number? How are isotopes different from stable atoms? How many protons and neutrons are in mendelevium?
How are protons and neutrons different from and similar to each other? Discovery of Subatomic Particles: Until 1897, scientists believed that there was no smaller unit of matter in existence than the atom. This changed when J.J. Thomson first discovered the electron, proving the existence o...
Atoms of both isotopes of copper have 29 protons, but a copper-63 atom has 34 neutrons while a copper-65 atom has 36 neutrons. Both isotopes act and look the same, and both are stable. Radioactive Material The part that scientists didn't understand until about 100 years ago is that ...
Results in professional wrestling are predetermined, but one streak earned respect from fans and athletes alike. WWE’s The Undertaker won 21 consecutive matches at Wrestlemania—the industry’s Super Bowl event—and put his streak on the line at Wrestlemania XXX against MMA star Brock Lesnar. Som...
which smell like rotten eggs.And molecules with very different structures can smell similar.Most strikingly, some molecules can smell different — to animals, if not necessarily to humans — simply because they contain different isotopes (atoms that are chemically identical but have a different mass...
How are metals and nonmetals alike? How do the nuclei of different isotopes of an element vary? In what way are elements in the same column of the periodic table the same? What are all the transition metals on the periodic table? What are the inner transition metals? What d...
And while briefcases have become the common mom carry-all, wedding bands have fallen by the wayside: As of 2012, a majority of women under 30 years old who are having babies are doing so outside of marriage [source: DeParle and Tavernise]. However, there is one facet of American ...
Philosophers known as “virtue epistemologists” claim that the goods of the intellectual life—knowledge, wisdom, understanding, etc.—are more easily obtained by persons possessing mature traits of intellectual character, such as open-mindedness, teachability, and intellectual courage, than by persons...
If, like Rip Van Winkle, you've been asleep for the last decade and have just woken up, that flip phone you have has become super-popular among retro technologists and survivalists alike, and, oh yeah, Artificial Intelligence (AI) is either going to kill you or save you. ...
But for a while, they were inseparable. “Zandalee and my daughter looked so much alike, they could've passed for twins,” recalls Barb. “[She] came from a broken home. Her father was always working, mother not in her life. We kind of took her in. She'd come ...