chemistry

John H. Long (chemist)

John H. Long (chemist) 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 John H. Long (chemist) rather than just read about it. In short: John Harper Long (26 December 1856 – 14 June 1918) was the president of the American Chemical Society in 1903. He was a professor of chemistry at the Northwestern University School of Medicine.

Key takeaways

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

Reference excerpt

John Harper Long (26 December 1856 – 14 June 1918) was the president of the American Chemical Society in 1903. He was a professor of chemistry at the Northwestern University School of Medicine.

Biography Long was born in Steubenville, Ohio on 26 December 1856. After the death of his parents, he went to live with an uncle in Olathe, Kansas. Long entered the University of Kansas (KU) in 1873, graduating with a B.S. degree in 1877, making him the first chemistry graduate of KU. He then went to the University of Tübingen to study under Lothar Meyer, earning an Sc.D. degree in 1879. Long also studied in Würzburg and Breslau before returning to the United States in 1880. In 1881, Long joined the faculty of Northwestern University. In 1885, he also became a chemist for the Illinois State Board of Health. In 1895, Long was named a fellow of the American Association for the Advancement of Science. He was the author of several chemistry textbooks and also translated a German organic chemistry text into English.

Personal Long was the son of John Long and Elizabeth (Harper) Long. On 24 August 1885, Long married Catherine Stoneman. Long died at his home in Evanston, Illinois on 14 June 1918.

References

Illustrations

Worked examples

Example 1 — a first encounter with John H. Long (chemist)

Start with the simplest possible case. Write down what John H. Long (chemist) 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 John H. Long (chemist) 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 John H. Long (chemist) 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 John H. Long (chemist)

In research: John H. Long (chemist) 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 John H. Long (chemist) 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: John H. Long (chemist) is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1856 births, 1918 deaths, 19th-century American chemists, so understanding it makes those chapters shorter.
In everyday life: Look for John H. Long (chemist) 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 John H. Long (chemist) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what John H. Long (chemist) 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 John H. Long (chemist) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is John H. Long (chemist) in simple terms?

John Harper Long (26 December 1856 – 14 June 1918) was the president of the American Chemical Society in 1903. He was a professor of chemistry at the Northwestern University School of Medicine.

Why does John H. Long (chemist) 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 John H. Long (chemist)?

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 John H. Long (chemist).