Can anyone help me check my classifications of these into metallic, ionic, molecular or covalent network, and if I am wrong tell me why
Aluminum - Mettalic
Ascorbic acid - ionic
Graphite - covalent
Paraffin - molecular
Palmitic acid - ionic
Sodium chloride - covalent
Sucrose - molecular
Water - ionic
Thank you
4 answers
you have missed so many, you need to go back and study the characteristics of the classifications.
Richard, to be honest about this, I've been in this business a long time and I've never used "molecular" as a type of bond. I've used it in other contexts but not in the type of bond. Al is right, graphite is right, sodium chloride and water are wrong. Perhaps if you told me how your text/instructor defines molecular I could help you more. Perhaps another tutor cn address this better than I have done.
Ok. Molecular usually means weak covalent intermolecular bonds, such as in waxes (read paraffin)
Aluminum - Metalic
Ascorbic acid - covalent, sometimes called molecular
Graphite - covalent...maybe, but it is a often a very imporant type of covalent, called network solid. Look that up. Diamonds are network solids.
Paraffin - molecular covalent.
Palmitic acid - in solid, it is a fat, read weak covalent intermolecular
Sodium chloride - ionic
Sucrose - covalent
Water - hydrogen bonds...look that up. but in the molecule itself, covalent.
There are many ways to classify bonds, all have one thing in common: how are electrons shared. Frankly, the dividing lines into these categories is often fuzzy, as there may be more than one type. Generally, when exploring these you look at physical characteristics, hardness, vapor pressure, physical state (solid, liquid, or gas), and how it crystalizes in the solid state. I would not worry if you think you don't have this down pat.
Aluminum - Metalic
Ascorbic acid - covalent, sometimes called molecular
Graphite - covalent...maybe, but it is a often a very imporant type of covalent, called network solid. Look that up. Diamonds are network solids.
Paraffin - molecular covalent.
Palmitic acid - in solid, it is a fat, read weak covalent intermolecular
Sodium chloride - ionic
Sucrose - covalent
Water - hydrogen bonds...look that up. but in the molecule itself, covalent.
There are many ways to classify bonds, all have one thing in common: how are electrons shared. Frankly, the dividing lines into these categories is often fuzzy, as there may be more than one type. Generally, when exploring these you look at physical characteristics, hardness, vapor pressure, physical state (solid, liquid, or gas), and how it crystalizes in the solid state. I would not worry if you think you don't have this down pat.
ice --> serious hydrogen bonds :)