Accurate: Performance predictions consistently fall within a narrow range of expected values and don’t vary greatly.
As a licensed pilot and certified flight instructor, I’ve bet my life, and the life of my students and passengers that I know exactly how a given plane will perform under given circumstances: how much runway it will take to take off, fly a specified distance and land at another airport. What inputs it takes to recover from a stall (that’s not a reference to the engine by the way) and spins. Anyone who has flown in a plane is betting the science of flight is a “hard science” with consistent predictable results.
Q: Why does hamburger have lower energy than steak?
Q: If H2O is the formula for water, what is the formula for ice? Q: Why did Chlorine's sisters Boron and Carbon lock her in the closet? Q: Did you hear about the chemist who was reading a book about Helium? Q: What is a Ochem students favorite kind of plant?
Q: What do you call a periodic table with gold missing? Carbon-14, 14C, or radiocarbon, is a radioactive isotope of carbon discovered on February 27, 1940, by Martin Kamen and Sam Ruben at the University of California Radiation Laboratory in Berkeley, though its existence had been suggested already in 1934 by Franz Kurie. Its nucleus contains 6 protons and 8 neutrons.Its presence in organic materials is the basis of the radiocarbon dating method to date archaeological, geological, and hydrogeological samples.In the periodic table, potassium is one of the alkali metals.All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge – a cation, which combines with anions to form salts. Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and reacts vigorously with water, generating sufficient heat to ignite hydrogen emitted in the reaction and burning with a lilac-colored flame.