This page holds a finished CHEM-120 Week 2 molecular structure description, written so that one compound, and only one, fits the arrangement the words set out. Searches like "chem 120 week 2 assignment example", "chem120 week 2 sample" and "chem-120 week 2 example" land here.
What a finished CHEM-120 Week 2 molecular structure description looks like
Half a page, prose, with the molecular formula and one accepted name sitting at the top so the reader knows what is being described before the description starts. The body walks the skeleton: how many carbons, how they are joined, where the chain turns or closes into a ring. Attachments come next, each placed at a numbered carbon rather than vaguely along the middle. Bond types are stated where they are not obvious, and every atom ends with the number of bonds it is allowed. A short closing passage says what the arrangement implies, usually one property, so the description stops being an inventory. A drawing may accompany it, and the prose is written to stand without it.
How a CHEM-120 Week 2 example is structured
Formula and name before anything else, because a reader who has to infer the compound from the description will infer the wrong one. The skeleton follows, longest chain first, numbered from the end that gives attachments the lowest positions, which is the convention the naming system already uses and is worth borrowing for the prose. Attachments are placed one at a time against those numbers. Bond types come with them rather than in a separate pass, since a double bond changes where the next attachment can sit. A check paragraph then counts: four bonds at each carbon, two at oxygen, three at nitrogen, and the totals matching the formula given at the top. The description closes on one consequence of the arrangement, which is where the week stops being descriptive. One naming convention runs the whole document.
Formula and name at the top
The compound is identified before it is described. A reader who has to work out which substance the paragraph means will settle on the wrong one and mark everything after it against that.
Numbered positions, not vague ones
Every attachment is placed at a specific carbon. Somewhere along the chain is not a position, and a description allowing two arrangements has described neither of them.
Count the bonds before submitting
Four at carbon, three at nitrogen, two at oxygen, one at hydrogen. A structure failing that count invalidates the property claim built on it, and the check takes a minute.
One name, used throughout
Pick the systematic name or the everyday one and hold to it. A compound that changes labels partway through hands a grader two substances to track and a reason to doubt both.
Finish on a consequence
The description earns its last row by naming one thing the arrangement causes: a solubility, a melting point, a site where something else can attach.
Where marks go in CHEM-120 Week 2
A carbon shown with three attachments and no fourth is the error that takes everything with it, since every property claimed afterward rests on an arrangement that cannot exist. Next in cost is the description satisfied by two different compounds, usually because an attachment was placed on the chain without a number. A name at the top that disagrees with the positions in the body costs the same way, because the reader has to decide which one the writer meant and the safe assumption is neither. Lower down sit the inventory paragraph that lists atoms without joining them, a ring described as though it were an open chain, and a closing property asserted with no line back to the arrangement just set out.
Get a CHEM-120 Week 2 example written to your instructions
Send the assignment page, the compound your section assigned and any rubric rows published with it, and a finished description comes back inside 24-48h, built so the arrangement can be rebuilt from the words alone. The first example is free, and it is written as something to hold your own draft against.
CHEM-120 Week 2 questions, answered
Does the description need a drawing?
Many sections ask for one and some accept prose alone. Either way the writing is marked on its own, so the example is built to stand without the image beside it. Where a drawing is required, it matches the prose exactly, since a figure showing one arrangement and a paragraph describing another is a contradiction a grader reads in seconds.
Which naming system should the example use?
Follow what your section published. Where the assignment asks for positions, the systematic name is usually expected, because an everyday name carries no numbering. Where the classroom has been using common names all week, those are fine. The rule mattering more than the choice is consistency across the whole document, including any figure caption.
How much property belongs in a structure description?
One, and it has to be traceable. The closing claim is worth points only if a reader can point at the part of the arrangement producing it, so a hydroxyl explains a solubility and a long hydrocarbon tail explains the opposite. A list of properties with no line back to the atoms adds length and nothing else.