7 Written questions
6 Multiple choice questions
- formed between atoms of different radius, where the smaller atoms fill the interstitial spaces between the larger atoms
- density is usually between that of the component metals; alloy remains malleable and ductile
- formed between atoms of comparable radius, where one atom substitutes for the other in the lattice
- Poor: ionic lattices are rigid and once broken tend to cleave along an entire plane.
- Brittle: due to the repulsion of like charges caused when one layer slides across another layer.
- Malleable and ductile: deforming the solid does not change the environment immediately surrounding each metal core
6 True/False questions
Water solubility of an ionic solid → Insoluble: ionic compounds tend not to dissolve in nonpolar solvents because the attractions between ions are much more favorable than the attractions among the separated ions and nonpolar solvent molecules.
Surface chemistry of an alloy → Alloy formation sometimes alters the chemistry such as the formation of a chemically inert oxide layer in stainless steel.
Interstitial Alloy (properties) → formed between atoms of different radius, where the smaller atoms fill the interstitial spaces between the larger atoms
Hardness of an ionic solid → Hard: ionic lattice is strong and rigid
Vapor pressure an of ionic solid → Very Low: due to the strong Coulombic interactions of positive and negative ions arranged in a regular three-dimensional array.
Alloys → Metallic mixtures