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Chemistry: explore STEM content (page 40 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.

Content Groups1

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Flowchart16 objects

Chemistry

Chemistry · L3 · Empirical Formula from Percent Composition

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Chemistry · L3 · Empirical Formula from Percent Composition

Flowchart11 objects

Chemistry

Chemistry · L4 · Enantiomers: Same vs Different

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Chemistry · L4 · Enantiomers: Same vs Different

Collection5 items

01Chemistry · L4 · Spectroscopy Basics

02Chemistry · L4 · Spectroscopy basics: what each technique measures

03Chemistry · L4 · How spectroscopy works: energy in, signal out

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Chemistry

Chemistry · L4 · Spectroscopy Basics

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Chemistry · L4 · Spectroscopy Basics

Flashcards12 cards

What raw materials go into a blast furnace, and what is each one for?1 / 12

Four raw materials are charged into the top of the furnace: iron ore (hematite, Fe₂O₃) — the source of iron; coke (carbon) — burned as fuel and used as the reducing agent; limestone (calcium carbonate) — added as a flux to remove impurities; and a blast of hot air blown in near the base, which burns the coke and drives the whole process.

Chemistry

Chemistry · L4 · Blast Furnace and Electrolytic Refining

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Chemistry · L4 · Blast Furnace and Electrolytic Refining

Quiz6 questions

In the particle picture, what causes gas pressure?

AOne large particle pushing steadily on the containerBCountless tiny particles constantly colliding with the container's wallsCThe container walls squeezing inward on their ownDGas particles sticking permanently to the walls

Chemistry

Chemistry · L2 · Gas Pressure — the Particle Picture

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Chemistry · L2 · Gas Pressure — the Particle Picture

Flowchart16 objects

Chemistry

Chemistry · L5 · The Third Law and Absolute Entropy · flowchart

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Chemistry · L5 · The Third Law and Absolute Entropy · flowchart

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Chemistry

Chemistry · L3 · Stoichiometry & the Mole · flowchart

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Chemistry · L3 · Stoichiometry & the Mole · flowchart

Collection6 items

01Chemistry · L1 · Staying Safe with Chemicals

02Chemistry · L1 · Warning Pictures on Bottles

03Chemistry · L1 · Staying Safe with Chemicals at Home

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Chemistry

Chemistry · L1 · Staying Safe with Chemicals

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Chemistry · L1 · Staying Safe with Chemicals

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Chemistry

Chemistry · L1 · Secret Messages with Invisible Ink · flowchart

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Chemistry · L1 · Secret Messages with Invisible Ink · flowchart

MoleculeO

Chemistry

Chemistry · L2 · Water — the Everyday Solvent

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Chemistry · L2 · Water — the Everyday Solvent

Quiz6 questions

Which pair of metals sits at the very top of the reactivity series (most reactive)?

AGold and platinumBPotassium and sodiumCIron and copperDAluminium and zinc

Chemistry

Chemistry · L2 · Metals and Reactivity

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Chemistry · L2 · Metals and Reactivity

Flowchart9 objects

Chemistry

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

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

Flowchart7 objects

Chemistry

Chemistry · L3 · Entropy and the Second Law · flowchart

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Chemistry · L3 · Entropy and the Second Law · flowchart

Collection2 items

01Chemistry · L4 · Thermochemistry & Chemical Equilibrium

02Chemistry · L4 · Chemical kinetics: rate laws, activation energy, and catalysis

Chemistry

Chemistry · L4 · Thermochemistry & Kinetics

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Chemistry · L4 · Thermochemistry & Kinetics

Flowchart9 objects

Chemistry

Chemistry · L2 · Periodic Table Basics · flowchart

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Chemistry · L2 · Periodic Table Basics · flowchart

Flowchart18 objects

Chemistry

Chemistry · L3 · Why Alloying Hardens a Metal

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Chemistry · L3 · Why Alloying Hardens a Metal

Flashcards9 cards

What is retrosynthetic analysis, and who formalized it?1 / 9

Retrosynthetic analysis, formalized by E. J. Corey, works backward from a target molecule by applying disconnections — the mental reverse of a known forward reaction — to generate simpler synthetic precursors, repeating until the precursors are commercially available or trivially accessible starting materials. It reframes synthesis planning as a search problem over a tree of possible disconnections rather than a forward guess-and-check process.

Chemistry

Chemistry · L5 · Total Synthesis Strategy

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Chemistry · L5 · Total Synthesis Strategy

Flowchart14 objects

Chemistry

Chemistry · L2 · Energy in the Water Cycle · flowchart

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Chemistry · L2 · Energy in the Water Cycle · flowchart

Flashcards10 cards

What do the single line "|" and double line "||" mean in cell notation?1 / 10

A single vertical line "|" marks a phase boundary — for example between a solid electrode and its surrounding aqueous solution. A double vertical line "||" marks the salt bridge (or porous membrane) separating the two half-cells. Everything to the left of "||" is one half-cell; everything to the right is the other.

Chemistry

Chemistry · L4 · Cell Notation and Concentration Cells

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Chemistry · L4 · Cell Notation and Concentration Cells

Flowchart19 objects

Chemistry

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

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

Collection4 items

01Chemistry · L5 · Bioinorganic Metalloenzymes

02Chemistry · L5 · Bioinorganic Metalloenzymes

03Chemistry · L5 · Cytochrome P450 Catalytic Cycle

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Chemistry

Chemistry · L5 · Bioinorganic Metalloenzymes

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Chemistry · L5 · Bioinorganic Metalloenzymes

Flowchart15 objects

Chemistry

Chemistry · L5 · Computational Docking & Drug Design · flowchart

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Chemistry · L5 · Computational Docking & Drug Design · flowchart

Flowchart9 objects

Chemistry

Chemistry · L2 · Gas Pressure — the Particle Picture · flowchart

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Chemistry · L2 · Gas Pressure — the Particle Picture · flowchart

Flowchart16 objects

Chemistry

Chemistry · L5 · Cytochrome P450 Catalytic Cycle

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Chemistry · L5 · Cytochrome P450 Catalytic Cycle

Flowchart11 objects

Chemistry

Chemistry · L1 · What Dissolves in Water?

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Chemistry · L1 · What Dissolves in Water?

Quiz5 questions

What does a combustion analysis apparatus actually measure directly?

AThe mass of CO2 and the mass of H2O produced when a known mass of sample burns completelyBThe percent composition of the sample, read off an instrument displayCThe molar mass of the sample directlyDThe number of moles of oxygen gas consumed

Chemistry

Chemistry · L3 · Combustion Analysis — 5 Q

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Chemistry · L3 · Combustion Analysis — 5 Q

Flashcards11 cards

State Faraday's first law of electrolysis in words.1 / 11

The mass of a substance produced (or dissolved) at an electrode during electrolysis is directly proportional to the quantity of electric charge, Q, passed through the cell. Double the charge, double the mass deposited.

Chemistry

Chemistry · L4 · Faraday's Laws of Electrolysis

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Chemistry · L4 · Faraday's Laws of Electrolysis

Quiz5 questions

80 g of water is heated from 15 °C to 65 °C. Using c = 4.18 J/(g·°C), how much heat energy was transferred?

A16.7 kJB21.7 kJC8.4 kJD1.67 kJ

Chemistry

Chemistry · L3 · Thermochemistry Basics Quiz

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Chemistry · L3 · Thermochemistry Basics Quiz

Note~386 words · 2 min

Why Salt Melts Icy Roads (and Makes Ice Cream Colder) Salt is just a simple kitchen ingredient. But when you mix it with ice, it does something surprising — it makes it much harder for the water to stay frozen solid. Salt on Icy Sidewalks a

Chemistry

Chemistry · L1 · Why Salt Melts Icy Roads

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Chemistry · L1 · Why Salt Melts Icy Roads

Collection4 items

01Chemistry · L4 · Hess's Law Calculations

02Chemistry · L4 · Hess's Law calculations: cycles, scaling, and the Born–Haber cycle

03Chemistry · L4 · Born–Haber cycle for NaCl

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Chemistry

Chemistry · L4 · Hess's Law Calculations

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Chemistry · L4 · Hess's Law Calculations

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