chemistry

Mark A. Johnson

Mark A. Johnson 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 Mark A. Johnson rather than just read about it. In short: Mark A. Johnson is an American physical chemist and a professor of chemistry at Yale University.

Key takeaways

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

Reference excerpt

Mark A. Johnson is an American physical chemist and a professor of chemistry at Yale University. He received his Ph.D. at Stanford University in 1983. Johnson is a co-editor of Annual Review of Physical Chemistry beginning with its 2012 issue. He became a Fellow of the American Physical Society in 1999, a Fellow of the American Association for the Advancement of Science in 2005, a Fellow of the American Academy of Arts and Sciences in 2009, and a Fellow of the American Chemical Society in 2010. He received the Alexander von Humboldt Senior Research Award in 2012. He is the 2014 recipient of the Irving Langmuir Award. He is also a member of the United States National Academy of Sciences.

References

Worked examples

Example 1 — a first encounter with Mark A. Johnson

Start with the simplest possible case. Write down what Mark A. Johnson 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 Mark A. Johnson 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 Mark A. Johnson 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 Mark A. Johnson

In research: Mark A. Johnson 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 Mark A. Johnson 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: Mark A. Johnson is common in secondary-school and first-year university syllabi. It links to neighbouring topics American academic journal editors, American chemist stubs, American spectroscopists, so understanding it makes those chapters shorter.
In everyday life: Look for Mark A. Johnson 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 Mark A. Johnson in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Mark A. Johnson 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 Mark A. Johnson out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Mark A. Johnson in simple terms?

Mark A. Johnson is an American physical chemist and a professor of chemistry at Yale University.

Why does Mark A. Johnson 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 Mark A. Johnson?

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 Mark A. Johnson.