Make it yours.Save notes, decks & boards to your own library.

openstem

Explore

Spaces

My Library

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.

Content Groups1

Loading…

loading…

About Privacy Terms of Service© openstem

We use privacy-friendly product analytics (no session recording, PII masked) to improve OpenStem. Load analytics? Privacy Policy

openstem

Explore

Groups Favorites

Collections Notes Flashcards Quizzes Sketches Flowcharts Plots Molecules

Make it yours.Save notes, decks & boards to your own library.

Get started Sign in

Explore Groups Favorites

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.

Content Groups1

Loading…

Chemistry: explore STEM content (page 17 of 47) · openstem

Flowchart11 objects

Chemistry

Chemistry · L5 · Photochemistry: The Jablonski Diagram · flowchart

@openstem

Chemistry · L5 · Photochemistry: The Jablonski Diagram · flowchart

Note~306 words · 2 min

The pH Scale Litmus paper can only tell you whether something is an acid or a base. But chemists often want to know just how acidic or how basic something is — and that's what the pH scale is for. The pH scale runs from 0 to 14. A pH of 0

Chemistry

Chemistry · L2 · The pH Scale

@openstem

Chemistry · L2 · The pH Scale

Flowchart18 objects

Chemistry

Chemistry · L5 · Crystal Field Stabilization Energy: The Arithmetic and Its Payoff · flowchart

@openstem

Chemistry · L5 · Crystal Field Stabilization Energy: The Arithmetic and Its Payoff · flowchart

Plot1 plot · 2 params

Chemistry

Chemistry · L5 · Michaelis-Menten Velocity vs Substrate Concentration

@openstem

Chemistry · L5 · Michaelis-Menten Velocity vs Substrate Concentration

MoleculeO

Chemistry

Chemistry · L3 · Water (H₂O)

@openstem

Chemistry · L3 · Water (H₂O)

Flowchart13 objects

Chemistry

Chemistry · L5 · Chemiluminescence: Light Out With No Light In · flowchart

@openstem

Chemistry · L5 · Chemiluminescence: Light Out With No Light In · flowchart

Flashcards10 cards

How does salting meat or fish help stop it from spoiling?1 / 10

A high concentration of salt on the surface draws water out of any bacteria or mould cells that land on the food. Water always moves toward the saltier side across a cell membrane, so the microbe's own water is pulled out of it, drying it out and stopping it from growing.

Chemistry

Chemistry · L2 · The Chemistry of Food Preservation

@openstem

Chemistry · L2 · The Chemistry of Food Preservation

Flashcards10 cards

State the calorimetry equation q = mcΔT and define every symbol.1 / 10

q is the heat transferred (J or kJ), m is the mass of the substance (g), c is its specific heat capacity (J/(g·°C), an intensive property specific to the material), and ΔT is the temperature change, T_final − T_initial (°C or K — the size of a degree is the same on both scales, so ΔT is identical either way).

Chemistry

Chemistry · L4 · Thermochemistry: Calorimetry Calculations

@openstem

Chemistry · L4 · Thermochemistry: Calorimetry Calculations

Collection3 items

01Chemistry · L4 · Thermochemistry: Calorimetry Calculations

02Chemistry · L4 · Calorimetry calculations: q = mcΔT, calorimeter types, and ΔH vs ΔU

03Chemistry · L4 · Calorimetry Calculations — 5 Q

Chemistry

Chemistry · L4 · Thermochemistry: Calorimetry Calculations

@openstem

Chemistry · L4 · Thermochemistry: Calorimetry Calculations

Collection4 items

01Chemistry · L5 · Isotope Labeling & Tracer Studies

02Chemistry · L5 · Isotope Labeling and Tracer Studies

03Chemistry · L5 · PET Imaging Detection Principle

+1 more

Chemistry

Chemistry · L5 · Isotope Labeling & Tracer Studies

@openstem

Chemistry · L5 · Isotope Labeling & Tracer Studies

Note~548 words · 3 min

The Rocking-Chair Mechanism A lithium-ion battery does not consume its electrode materials the way, say, a lead-acid battery consumes lead and lead dioxide. Instead, Li⁺ ions shuttle back and forth between two intercalation host structures

Chemistry

Chemistry · L5 · Battery Chemistry & Materials

@openstem

Chemistry · L5 · Battery Chemistry & Materials

Note~725 words · 4 min

Mass spectrometry fragmentation: reading a spectrum's fingerprint A mass spectrum plots the relative abundance of ions against their mass-to-charge ratio (m/z). In electron impact (EI) mass spectrometry, a high-energy electron beam does mor

Chemistry

Chemistry · L4 · Mass spectrometry fragmentation: molecular ions, alpha cleavage, and isotope patterns

@openstem

Chemistry · L4 · Mass spectrometry fragmentation: molecular ions, alpha cleavage, and isotope patterns

Note~922 words · 5 min

Titration curves: shape, the half-equivalence point, and choosing an indicator A titration curve plots pH against volume of titrant added. Its overall shape — where it starts, how gradually it rises, and how sharp the jump at equivalence is

Chemistry

Chemistry · L4 · Titration curve shapes, the half-equivalence point, and indicator selection

@openstem

Chemistry · L4 · Titration curve shapes, the half-equivalence point, and indicator selection

Collection5 items

01Chemistry · L4 · Catalysis & Green Chemistry

02Chemistry · L4 · Catalysis and green chemistry: lowering barriers, cutting waste

03Chemistry · L4 · Homogeneous vs heterogeneous catalysis: how to tell them apart

+2 more

Chemistry

Chemistry · L4 · Catalysis & Green Chemistry

@openstem

Chemistry · L4 · Catalysis & Green Chemistry

Flowchart13 objects

Chemistry

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

@openstem

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

Flowchart9 objects

Chemistry

Chemistry · L1 · Hidden Colors in a Black Marker · flowchart

@openstem

Chemistry · L1 · Hidden Colors in a Black Marker · flowchart

Quiz6 questions

What makes the bubbles in a fizzy drink?

ACarbon dioxide gas that was dissolved in the liquidBTiny pieces of sugar floating upCAir leaking in through the capDThe liquid boiling

Chemistry

Chemistry · L1 · Fizzy Drinks and Dissolved Gas

@openstem

Chemistry · L1 · Fizzy Drinks and Dissolved Gas

Collection5 items

01Chemistry · L1 · Why Salt Melts Icy Roads

02Chemistry · L1 · Why Salt Melts Icy Roads

03Chemistry · L1 · Salt on Icy Roads

+2 more

Chemistry

Chemistry · L1 · Why Salt Melts Icy Roads

@openstem

Chemistry · L1 · Why Salt Melts Icy Roads

Flowchart7 objects

Chemistry

Chemistry · L1 · How Soap Cleans · flowchart

@openstem

Chemistry · L1 · How Soap Cleans · flowchart

Flashcards9 cards

What is photoredox catalysis, in mechanistic terms?1 / 9

Photoredox catalysis uses a photocatalyst — typically a polypyridyl Ru(II) or Ir(III) complex, or an organic dye — that, upon absorbing visible light, reaches a long-lived triplet metal-to-ligand charge-transfer (³MLCT) excited state that is simultaneously a much stronger oxidant AND a much stronger reductant than the catalyst's ground state. That excited state then engages in single-electron transfer (SET) with a substrate, generating a radical ion intermediate that drives the net organic transformation, before the catalyst is regenerated to close the cycle.

Chemistry

Chemistry · L5 · Photoredox Catalysis

@openstem

Chemistry · L5 · Photoredox Catalysis

Collection6 items

01Chemistry · L2 · Crystals — The Basics

02Chemistry · L2 · Growing Crystals

03Chemistry · L2 · Crystals and Crystallization

+3 more

Chemistry

Chemistry · L2 · Crystals and Crystallization

@openstem

Chemistry · L2 · Crystals and Crystallization

Flowchart19 objects

Chemistry

Chemistry · L3 · Thermoplastic vs Thermoset Under Heat

@openstem

Chemistry · L3 · Thermoplastic vs Thermoset Under Heat

Flowchart15 objects

Chemistry

Chemistry · L4 · Periodic table trends overview

@openstem

Chemistry · L4 · Periodic table trends overview

Note~698 words · 3 min

Electrochemistry: standard potentials, the Nernst equation, and cell types The earlier introduction to redox covered the qualitative picture: OIL RIG, spotting which species is oxidised and which is reduced, and how a galvanic cell wires th

Chemistry

Chemistry · L4 · Electrochemistry: standard potentials, the Nernst equation, and cell types

@openstem

Chemistry · L4 · Electrochemistry: standard potentials, the Nernst equation, and cell types

Flashcards6 cards

Why can't a polymer sample be assigned a single, exact molecular weight the way a small molecule like glucose can?1 / 6

A polymerization reaction doesn't stop every chain at exactly the same length — some chains stop growing early, some keep adding monomers longer, purely by chance during the reaction. A single batch of polymer is really a mixture of chains of many different lengths, so 'molecular weight' has to describe that whole distribution, not one exact value.

Chemistry

Chemistry · L4 · Polymer Molecular Weight & Polydispersity

@openstem

Chemistry · L4 · Polymer Molecular Weight & Polydispersity

Note~514 words · 3 min

Planning a Total Synthesis: Working Backward Total synthesis planning starts from the target and works backward. Corey's retrosynthetic analysis applies a disconnection — the conceptual reverse of a known forward reaction — to break the tar

Chemistry