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.
Properties of chromium. Chromium is a transition metal in Group 6 on the Periodic Table of Elements. In its pure form, chromium is a steel-gray, lustrous hard metal that has a high polish.It has many compounds that are all colored. [See Periodic Table of the Elements ].Of the compounds, the most important are the chromates of sodium and potassium; the dichromates; and potassium and ammonium chrome alums.hromium is a transition metal in Group 6 on the Periodic Table of Elements. In its pure form, chromium is a steel-gray, lustrous hard metal that has a high polish.