This page holds a finished CHEM-120 Week 4 functional group analysis, isolating the one group on a compound that accounts for the behavior the assignment asks about. Searches like "chem 120 week 4 assignment example", "chem120 week 4 sample" and "chem-120 week 4 example" land here.
What a finished CHEM-120 Week 4 functional group analysis looks like
A single page at most, and it leaves most of the molecule alone. The opening identifies the compound and lists what is hanging off it, hydroxyl, carbonyl, amine, carboxyl, so the reader can see the field being narrowed. One group is then selected and the selection is defended in a sentence: this is the group deciding the behavior in question, and here is why the others do not. The middle sets out that group's standard repertoire, what it does to solubility, whether it acts as an acid or a base, what it reacts with. The close applies the repertoire to this compound specifically, including anything about the rest of the molecule that changes the usual answer.
How a CHEM-120 Week 4 example is structured
Identify, narrow, generalize, apply. The compound comes first with every group on it named, because a reader cannot follow a narrowing that was never set up. The narrowing is the graded move, and it reaches the page as a defended choice rather than as the unexplained disappearance of every group that lost. What the chosen group does in general comes next, stated at the level of the group rather than of this compound, since that is the knowledge the week is testing. The application follows and is where the rest of the molecule returns: chain length shifts a solubility answer, a second group nearby can pull an acid stronger, a ring can block the space a reagent needs. The example closes on the observable the analysis predicts. Where a template supplies headings, they usually sit over these four moves.
List them, then choose one
The opening names every group on the compound so the narrowing is visible. Choosing silently looks like not noticing the others, and the row is marked on the choice.
Defend the choice in a sentence
One line saying why this group decides the behavior in question and the others do not. That line is usually worth more than the paragraph describing the group.
General first, then this compound
What a carboxyl does anywhere comes before what it does here. The week is testing whether the repertoire is known, and an answer that never leaves the example has not shown it.
Let the skeleton back in at the end
Chain length, a ring, a second group nearby. These modify the standard answer, and noticing them is what separates an analysis from a lookup.
Finish at an observable
Dissolves in water, reacts with a base, gives off a smell. The group's repertoire has to land on something the compound visibly does.
Where marks go in CHEM-120 Week 4
Listing every group on the molecule and analyzing none of them is where this assignment bleeds points, because the row is marked on the choice and a list makes no choice. Right behind it sits the group picked correctly and then described generically, so the answer would read identically for any compound carrying that group. Getting the group wrong is cheaper than either, oddly, since a defended wrong choice still shows the reasoning the week wants. Attributing to the group something the carbon chain is doing loses the middle of the answer: a long tail keeping a compound out of water is not the hydroxyl's work. At the bottom: a group named with the wrong term, an acid claim with no mention of what it hands its proton to, and a prediction that never becomes observable.
Get a CHEM-120 Week 4 example written to your instructions
Send the compound your section assigned, the assignment page and the rubric rows published with it, and a finished analysis comes back inside 24-48h, narrowed to the group that answers the question you were actually set. The first example is free, written to your instructions rather than to a generic molecule.
CHEM-120 Week 4 questions, answered
What if the compound has two groups doing the work?
Then say so and rank them. An amino acid carries an acid group and a basic group and its behavior in water comes from both, so an answer naming one is incomplete. What is not acceptable is listing both and declining to say which dominates under the conditions the assignment specifies.
Do I need to name the group with the formal term?
Yes, and getting the term wrong is expensive because the rest of the answer inherits it. A carbonyl sitting inside a chain and a carbonyl at the end of one are a ketone and an aldehyde, and they do not behave alike. The example uses whichever term your section's textbook uses.
Is the group the same thing as the reactive site?
Usually, and not always. The group names a fixed arrangement of atoms; the reactive site is wherever the chemistry happens under the conditions given. Most of the time they coincide, which is why the terms get used together. The example keeps them apart when the assignment asks about a reaction rather than about a property.