chemistry

Samarium monosulfide

Samarium monosulfide is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Samarium monosulfide rather than just read about it. In short: Samarium monosulfide is a binary inorganic chemical compound of samarium metal and sulfur with the chemical formula SmS. Synthesis Fusion of stoichiometric amounts of pure substances: Sm + S → SmS Physical properties Samarium monosulfide forms crystals of cubic system, spatial group Fm3m, cell parameters a = 0.5970–0.5863 nm, Z = 4, structurally isomorphic with NaCl.

Key takeaways

Samarium monosulfide belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Samarium monosulfide to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Samarium monosulfide from memory before moving on to harder problems.

Reference excerpt

Samarium monosulfide is a binary inorganic chemical compound of samarium metal and sulfur with the chemical formula SmS.

Synthesis Fusion of stoichiometric amounts of pure substances:

Sm + S → SmS

Physical properties Samarium monosulfide forms crystals of cubic system, spatial group Fm3m, cell parameters a = 0.5970–0.5863 nm, Z = 4, structurally isomorphic with NaCl. The compound melts congruently at a temperature of 1500 °C, 1940 °C, or 2080 °C. SmS is a chalcogenide material that exists in two possible states: as a metal (also called "golden") and as a semiconductor ("blue" or "black"). As a result, SmS has gained considerable interest as a switchable material.

Uses Samarium monosulfide has a high sensitivity to deformation. Therefore, SmS is a promising material for creating pressure sensors of force, torque, accelerations, etc.

References

Illustrations

Worked examples

Example 1 — a first encounter with Samarium monosulfide

Start with the simplest possible case. Write down what Samarium monosulfide claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Samarium monosulfide before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Samarium monosulfide ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Samarium monosulfide

In research: Samarium monosulfide appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Samarium monosulfide in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Samarium monosulfide is common in secondary-school and first-year university syllabi. It links to neighbouring topics Monosulfides, Rock salt crystal structure, Samarium compounds, so understanding it makes those chapters shorter.
In everyday life: Look for Samarium monosulfide outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Samarium monosulfide in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Samarium monosulfide means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Samarium monosulfide out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Samarium monosulfide in simple terms?

Samarium monosulfide is a binary inorganic chemical compound of samarium metal and sulfur with the chemical formula SmS. Synthesis Fusion of stoichiometric amounts of pure substances: Sm + S → SmS Physical properties Samarium monosulfide forms crystals of cubic system, spatial group Fm3m, cell para…

Why does Samarium monosulfide matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Samarium monosulfide?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Samarium monosulfide.