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Chemistry: explore STEM content (page 28 of 47) · openstem

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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Flowchart6 objects

Chemistry

Chemistry · L1 · Shaking Salad Dressing

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Chemistry · L1 · Shaking Salad Dressing

Flashcards10 cards

What three things does a candle's flame need to keep burning?1 / 10

Fuel (the wax), oxygen from the air, and enough heat.

Chemistry

Chemistry · L1 · Why a Candle Burns

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Chemistry · L1 · Why a Candle Burns

Collection6 items

01Chemistry · L4 · Organic Synthesis Routes & Retrosynthetic Analysis

02Chemistry · L4 · Retrosynthetic analysis and a worked multi-step synthesis

03Chemistry · L4 · Organic Synthesis Routes — 5 Q

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Chemistry

Chemistry · L4 · Organic Synthesis Routes

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Chemistry · L4 · Organic Synthesis Routes

Flashcards6 cards

What is the first step in growing sugar or salt crystals at home?1 / 6

Dissolve as much sugar or salt as possible into hot water, stirring until no more will dissolve. This makes a saturated solution — one packed with as much dissolved solid as it can hold.

Chemistry

Chemistry · L2 · Growing Crystals

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Chemistry · L2 · Growing Crystals

MoleculeC=C

Chemistry

Chemistry · L2 · Ethylene (C₂H₄)

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Chemistry · L2 · Ethylene (C₂H₄)

Quiz5 questions

What defines the 'rocking-chair' mechanism of a lithium-ion battery?

ALi+ ions shuttle between two intercalation host structures, inserting/extracting without either host structure being consumed or fundamentally transformedBLithium metal is deposited and stripped directly at both electrodesCThe electrodes physically rock back and forth during operationDThe battery consumes its electrode materials irreversibly like a primary battery

Chemistry

Chemistry · L5 · Battery Chemistry & Materials

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Chemistry · L5 · Battery Chemistry & Materials

Collection6 items

01Chemistry · L4 · Gibbs Free Energy — Spontaneity Cases & Crossover Temperature

02Chemistry · L4 · Gibbs Free Energy — ΔG° and the Equilibrium Constant K

03Chemistry · L4 · Gibbs free energy: the four cases, the crossover point, and the road to K

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Chemistry

Chemistry · L4 · Gibbs Free Energy & Spontaneity

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Chemistry · L4 · Gibbs Free Energy & Spontaneity

Flowchart11 objects

Chemistry

Chemistry · L4 · Back Titration: The Excess-and-Subtract Method · flowchart

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Chemistry · L4 · Back Titration: The Excess-and-Subtract Method · flowchart

Flowchart5 objects

Chemistry

Chemistry · L4 · Nuclear Chemistry: The Decay Law, Mass Defect & Binding Energy · flowchart

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Chemistry · L4 · Nuclear Chemistry: The Decay Law, Mass Defect & Binding Energy · flowchart

Quiz5 questions

Which process is a nanosecond-scale, spin-allowed S1 → S0 emission?

AFluorescenceBPhosphorescenceCIntersystem crossingDInternal conversion to the ground state

Chemistry

Chemistry · L5 · Photochemistry

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Chemistry · L5 · Photochemistry

Collection5 items

01Chemistry · L5 · Photochemistry

02Chemistry · L5 · Photochemistry: The Jablonski Diagram

03Chemistry · L5 · Jablonski Diagram: Photophysical Decay Pathways

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Chemistry

Chemistry · L5 · Photochemistry

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Chemistry · L5 · Photochemistry

Collection6 items

01Chemistry · L3 · Freezing & Boiling Point Shifts

02Chemistry · L3 · Vapor Pressure Lowering

03Chemistry · L3 · Colligative Properties

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Chemistry

Chemistry · L3 · Colligative Properties

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Chemistry · L3 · Colligative Properties

Flashcards12 cards

Where is the energy involved in a chemical reaction actually stored?1 / 12

In the chemical bonds holding atoms together, both in the reactants and in the products. A reaction changes energy because it changes which bonds exist.

Chemistry