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.
The melting point of the element, silicon, is about:  Melting Point: 1687 K (1414Â°C or 2577Â°F)  Boiling Point: 3538 K (3265Â°C or 5909Â°F)  Resource: http://education.jla â¦ b.org/itselemental/ele014.html  You can find the freezing point of the element there as well.