Dual coding theory has been applied to many cognitive phenomena including: mnemonics, problem-solving, concept learning and language. Dual coding theory accounts for the significance of spatial abilities in theories of intelligence (e.g., Guilford).
Properties. 1  Atomic Symbol: Cr. 2  Atomic Number: 24. 3  Atomic Mass: 51.996g/mol1.  Element Category: Transition 1  Metal. Density: 7.19g/cm3 at 20Â° C. Melting Point: 3465Â°F 1  (1907Â°C) Boiling Point: 4840Â°F (2671Â° C) Mohâs Hardness: 5.5.
1 Gallium forms a very reflective surface on glass making an excellent mirror. 2  An amalgam of gallium, indium, tin is used in medical thermometers in place of the more traditional and toxic mercury thermometers. Gallium's melting point (302.93 K) is low enough to melt the metal in the palm of your hand. 2  Gallium is the element with the highest range of temperatures for its liquid phase. 3  The difference between gallium's melting and boiling point is 2373 Â°C.