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All fields Software Mathematics Physics Chemistry Biology Engineering Astronomy Environmental Other Chemistry Chemistry groups

Explore STEM Content

Search the community's STEM library — free to study, yours to make your own.

Chemistry

Reactions, bonding and organic chemistry on openstem — flashcards, notes, quizzes and molecule structures shared by the community. Study free, or clone into your library.

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Chemistry: explore STEM content (page 43 of 47) · openstem

Note~496 words · 2 min

Reading a Polarization Curve A fuel cell's polarization curve — cell voltage plotted against current density — always slopes downward from the theoretical open-circuit voltage, because drawing any real current incurs real voltage losses. Th

Chemistry

Chemistry · L5 · Electrocatalysis and Fuel Cells

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Chemistry · L5 · Electrocatalysis and Fuel Cells

Flowchart13 objects

Chemistry

Chemistry · L5 · Ligand Field Theory: Spectrochemical Series, Spin State, and Jahn–Teller Distortion · flowchart

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Chemistry · L5 · Ligand Field Theory: Spectrochemical Series, Spin State, and Jahn–Teller Distortion · flowchart

Collection4 items

01Chemistry · L3 · Electronegativity and Bond Polarity

02Chemistry · L3 · Electronegativity and Bond Polarity

03Chemistry · L3 · CO₂ vs. Water — Polar Bonds, Different Molecular Polarity

+1 more

Chemistry

Chemistry · L3 · Electronegativity and Bond Polarity

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Chemistry · L3 · Electronegativity and Bond Polarity

Note~513 words · 3 min

Molarity: putting a number on concentration Chapter L2 covered concentrated and dilute qualitatively — more solute per solvent feels stronger, tastes stronger, reacts faster. Chemistry needs an exact number for that idea, and molarity (M) i

Chemistry

Chemistry · L3 · Solutions & Molarity

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Chemistry · L3 · Solutions & Molarity

Collection6 items

01Chemistry · L1 · Water, a Special Liquid

02Chemistry · L1 · Water, a Special Liquid

03Chemistry · L1 · Where Does a Puddle Go?

+3 more

Chemistry

Chemistry · L1 · Water, a Special Liquid

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Chemistry · L1 · Water, a Special Liquid

Quiz6 questions

Why do you need two DIFFERENT metals to make a simple battery instead of two pieces of the same metal?

ATwo different metals look better togetherBDifferent metals hold onto their tiny charged particles with different strength, which creates a push for charge to flowCYou need two different metals so the battery doesn't get too hotDOnly two different metals can touch an electrolyte at once

Chemistry

Chemistry · L2 · How Batteries Work

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Chemistry · L2 · How Batteries Work

Flowchart11 objects

Chemistry

Chemistry · L5 · Langmuir Monolayer vs BET Multilayer Adsorption

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Chemistry · L5 · Langmuir Monolayer vs BET Multilayer Adsorption

Flashcards11 cards

Name the six major functional groups in organic chemistry and give an example of each.1 / 11

Alcohol (–OH, ethanol), Aldehyde (–CHO, ethanal), Ketone (C=O flanked by C, propanone), Carboxylic acid (–COOH, ethanoic acid), Amine (–NH₂, methylamine), Ester (–COO–, ethyl ethanoate). Recognition of these is foundational.

Chemistry

Chemistry · L4 · Organic Chemistry — Functional Groups & Reactions

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Chemistry · L4 · Organic Chemistry — Functional Groups & Reactions

Flowchart9 objects

Chemistry

Chemistry · L4 · Buffer Calculations and Capacity: Henderson–Hasselbalch, worked pH calculations, and capacity · flowchart

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Chemistry · L4 · Buffer Calculations and Capacity: Henderson–Hasselbalch, worked pH calculations, and capacity · flowchart

Flowchart15 objects

Chemistry

Chemistry · L2 · Separating Mixtures · flowchart

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Chemistry · L2 · Separating Mixtures · flowchart

Flowchart13 objects

Chemistry

Chemistry · L2 · The Periodic Table — Big Picture

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Chemistry · L2 · The Periodic Table — Big Picture

Flowchart13 objects

Chemistry

Chemistry · L4 · Greenhouse Gas Infrared Absorption and Re-emission

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Chemistry · L4 · Greenhouse Gas Infrared Absorption and Re-emission

Quiz6 questions

Which pair of conditions must BOTH be true for a collision between reactant particles to cause a reaction?

AEnough energy to clear the activation energy, AND the correct orientationBThe particles must be the same size and the same colourCThe temperature must be above 100 °C and the pressure must be highDThe particles must collide more than once

Chemistry

Chemistry · L3 · Reaction Rates & Kinetics — 6 Q

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Chemistry · L3 · Reaction Rates & Kinetics — 6 Q

Flowchart20 objects

Chemistry

Chemistry · L4 · Naming a coordination complex, step by step

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Chemistry · L4 · Naming a coordination complex, step by step

Flashcards8 cards

What is a chemical symbol?1 / 8

A chemical symbol is a short code, one or two letters, that stands for one element. O stands for oxygen, Fe stands for iron.

Chemistry

Chemistry · L2 · Chemical Symbols

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Chemistry · L2 · Chemical Symbols

Flashcards8 cards

What is a zeolite, structurally, and where does its catalytic acidity come from?1 / 8

A zeolite is a crystalline, microporous aluminosilicate built from corner-sharing SiO4 and AlO4 tetrahedra arranged into a well-defined, molecular-scale pore and channel network. Because Al³⁺ substitutes isomorphically for Si⁴⁺ in the tetrahedral framework, each substitution leaves the framework with one extra negative charge that must be balanced by a cation; when that charge-balancing cation is a proton (H⁺), it sits on a framework oxygen bridging the Al and Si tetrahedra, creating a strong, well-defined Brønsted acid site (a bridging Si-OH-Al hydroxyl) directly within the pore structure.

Chemistry

Chemistry · L5 · Zeolite Catalysis

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Chemistry · L5 · Zeolite Catalysis

Collection4 items

01Chemistry · L5 · Click Chemistry and Bioorthogonal Labeling

02Chemistry · L5 · Click Chemistry and Bioorthogonal Labeling

03Chemistry · L5 · Bioorthogonal Labeling Workflow with CuAAC

+1 more

Chemistry

Chemistry · L5 · Click Chemistry and Bioorthogonal Labeling

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Chemistry · L5 · Click Chemistry and Bioorthogonal Labeling

Flowchart5 objects

Chemistry

Chemistry · L1 · Evaporation and Condensation · flowchart

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Chemistry · L1 · Evaporation and Condensation · flowchart

Flowchart16 objects

Chemistry

Chemistry · L2 · Sweat Loss and Sports Drink Replacement

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Chemistry · L2 · Sweat Loss and Sports Drink Replacement

Collection4 items

01Chemistry · L5 · The Third Law and Absolute Entropy

02Chemistry · L5 · The Third Law and Absolute Entropy

03Chemistry · L5 · Building an Absolute Molar Entropy from S(0) = 0

+1 more

Chemistry

Chemistry · L5 · The Third Law and Absolute Entropy

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Chemistry · L5 · The Third Law and Absolute Entropy

Note~285 words · 1 min

Reactants Become Products A chemical reaction turns one set of substances into another. The substances you start with are called reactants. The new substances the reaction makes are called products. Chemists write this down as a word equati

Chemistry

Chemistry · L2 · Chemical Reactions & Word Equations

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Chemistry · L2 · Chemical Reactions & Word Equations

Flowchart11 objects

Chemistry

Chemistry · L3 · Reading the Titration Curve

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Chemistry · L3 · Reading the Titration Curve

Note~266 words · 1 min

Oil and Water Don't Mix Look at a bottle of salad dressing sitting on a shelf. You will almost always see it split into two layers — one part on top, one part on the bottom. Two Layers, Every Time The top layer is oil, and the bottom layer

Chemistry