CHEM-120 · Science prerequisites

CHEM-120 Introduction to General, Organic, and Biological Chemistry with Lab sample papers, week by week

Reviewed by Nell Harrington, MSN, RN Introduction to General, Organic, and Biological Chemistry with Lab Chamberlain University Free custom samples in 24–48h

CHEM-120 runs three chemistries at once and grades two things hardest: a report carrying numbers you measured, and an argument that gets from what a molecule is built from to how it behaves.

How this shelf works

Send the exact assignment or rubric from your classroom and a custom sample written to it lands in 24 to 48 hours, the first one free. CHEM-120 is Chamberlain’s Introduction to General, Organic, and Biological Chemistry with Lab course. It centers on the four credit survey where a lab report built on your own measurements and a structure to property argument carry the grade. Searches like "chem 120 week 4 assignment example", "CHEM120 sample paper", and "CHEM-120 week samples" land on this page.

What CHEM-120 is really about

Three chemistries share one four credit course, taught alongside each other rather than in sequence. The general portion supplies matter, atoms, molecules, the forces acting between them and the equations describing change. The organic portion supplies hydrocarbons and what happens once oxygen or nitrogen joins them. The biological portion supplies four families of large molecule, the enzymes working on them and the route from gene to protein. One of the four credits is laboratory, and that is the real dividing line between this course and the two credit sciences near it. MATH-105N comes first, and BIOS-242 waits on the far side, so failing here costs a slot in the schedule on top of the grade.

The move this course is built around runs from what a molecule is made of to what it then does. A prompt puts one or two compounds in front of you and waits for that move to be made: which liquids will take the compound up, how it treats whatever sits beside it, and what a shift in surrounding conditions does to either answer. Set the structure down, assert the behavior, leave the span between them empty, and the heaviest row on the page goes unfilled. The laboratory credit adds the other half: reports resting on figures you generated, marked on how honestly those figures appear. Separate trials, the distance between them, and an error term arriving with a reading attached. Weekly, over eight weeks.

What CHEM-120’s assessments ask for

A four credit course produces longer documents than the two credit sciences around it. The lab report is the centerpiece and recurs: procedure kept to what a reader would need to repeat the work, results tabulated, and a discussion that explains why the numbers landed where they did. Structure questions run alongside from the first weeks, asking for a molecule described precisely enough that a reader could rebuild it and then used in an argument rather than restated. Organic weeks add reaction explanations, where a named group on the molecule is the thing doing the work. Naming appears constantly, and mixing systematic with common names inside one document is a reliable way to confuse a reader. The last weeks turn to the large molecules, where the earlier chemistry is expected to reappear.

Where students lose points in CHEM-120

The procedure section is where the words go missing. Nothing else in the report writes itself so readily, which is exactly the danger: six hundred words can drain into it while the discussion waits. Reporting only an average throws away the evidence of how consistent the work was, when individual trials and their spread are part of what a report is proving. An error figure announced and not interpreted is a setup with no payoff: the sentence naming which direction it points and what could produce a difference that size is the row itself. Stopping at because it is polar leaves the interaction, the partner and the consequence unnamed. Switching naming systems midway reads as two compounds. And describing a structure whose bonds do not add up undermines every claim built on it.

CHEM-120 grading scale at Chamberlain: how the work is graded, from Chamberlain Assignments
How Chamberlain grades CHEM-120, visualized by Chamberlain Assignments.

The CHEM-120 drawers

Week 1

CHEM-120 Week 1 discussion post example

Week 1 often opens on what chemistry explains about a body before the biology does. On request, free, 24-48h.

See the example →
Week 2

CHEM-120 Week 2 molecular structure description example

Week 2 often wants a molecule written out in words precisely enough for a reader to rebuild. On request, free, 24-48h.

See the example →
Week 3

CHEM-120 Week 3 polarity and solubility explanation example

Week 3 often pairs an attraction between molecules with a property a bench test would show. On request, free, 24-48h.

See the example →
Week 4

CHEM-120 Week 4 functional group analysis example

Week 4 in many sections isolates the group doing the work rather than listing all of them. On request, free, 24-48h.

See the example →
Week 5

CHEM-120 Week 5 organic reaction explanation example

Week 5 frequently asks what changes on the molecule and what that change produces. On request, free, 24-48h.

See the example →
Week 6

CHEM-120 Week 6 chemistry lab report example

Week 6 usually assembles procedure, tabulated results and a discussion built from your own trials. On request, free, 24-48h.

See the example →
Week 7

CHEM-120 Week 7 percent error interpretation example

Week 7 commonly asks which direction a gap points and which step could produce it. On request, free, 24-48h.

See the example →
Week 8

CHEM-120 Week 8 macromolecule comparison paper example

Week 8 closes by holding the four large molecule families against each other on structure and role. On request, free, 24-48h.

See the example →
Different?

Your classroom shows something else?

Chamberlain University revises courses; week counts and deliverables shift between terms. Send what your classroom shows and the desk matches it exactly.

Send it over →

Using a CHEM-120 sample the right way

A finished report is worth more here than a page of instruction, because the gap between a passing one and a strong one is entirely in the discussion and that gap is hard to picture. A sample shows a procedure that stops where it should, a results table doing the work prose would have done badly, and a discussion arguing from the numbers rather than repeating them. Read the structure sections for how a prediction is made comparative, so it can be right or wrong instead of merely stated. Send your data sheet and the rubric rows, and the document comes back built on your readings while the submission stays yours.

How these samples are written

Every sample on this chart is written the way the custom ones are: the rubric decoded row by row, discussion samples sized for posts that cannot be edited after they land, templates filled field by field. Chamberlain revises classrooms; a custom request is always written to the rubric in YOUR course, never from a stale template.

CHEM-120 questions, answered

Do you run the experiment or record the measurements?

No. The measurements have to be yours, because every conclusion in the report leans on them and nobody else can generate them. Send the data sheet along with the rubric rows and the document comes back arranged around what you recorded, including the trials that disagreed with each other. Bench time, quizzes and exams stay with you.

A big percent error came back on my report. Is that a problem?

Rarely on its own. An introductory rubric buys your thinking about the number far more than the number itself, since the glassware and the clock impose ceilings no one is asking you to break. The damage comes from leaving the figure bare. Give it a direction, list two or three procedural steps capable of a gap that large, and commit to which one you think did most of it.

How do I stop the three chemistries drifting apart?

Keep a single sheet of correspondences going, not three separate notebooks. Each time a property turns up, park the underlying principle and the example that displays it on the same line. Attraction between neighboring molecules is doing the work behind a boiling point, a solubility and the folded shape of a protein alike. Later weeks hand out marks for answers that reach backward like this.