chemistry

Gram per cubic centimetre

Gram per cubic centimetre 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 Gram per cubic centimetre rather than just read about it. In short: The gram per cubic centimetre is a unit of density in International System of Units (SI), and is commonly used in chemistry. Its official SI symbols are g/cm3, g·cm−3, or g cm−3.

Key takeaways

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

Reference excerpt

The gram per cubic centimetre is a unit of density in International System of Units (SI), and is commonly used in chemistry. Its official SI symbols are g/cm3, g·cm−3, or g cm−3. It is equal to the units gram per millilitre (g/mL) and kilogram per litre (kg/L). It is defined by dividing the gram, a unit of mass, by the cubic centimetre, a unit of volume. It is a coherent unit in the CGS system, but is not a coherent unit of the SI. The density of water is approximately 1 g/cm3, since the gram was originally defined as the mass of one cubic centimetre of water at its maximum density at approximately 4 °C (39 °F).

Conversions 1 g/cm3 is equal to: = 1000 g/L (exactly) = 1000 kg/m3 (exactly) ≈ 62.4280 lb/cu ft (approximately) ≈ 133.5265 oz/US gal (approximately) 1 kg/m3 = 0.001 g/cm3(exactly) 1 lb/ft3 ≈ 0.01601846 g/cm3 (approximately) 1 oz/US gal ≈ 0.00748915 g/cm3 (approximately)

Illustrations

Worked examples

Example 1 — a first encounter with Gram per cubic centimetre

Start with the simplest possible case. Write down what Gram per cubic centimetre 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 Gram per cubic centimetre 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 Gram per cubic centimetre 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 Gram per cubic centimetre

In research: Gram per cubic centimetre 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 Gram per cubic centimetre 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: Gram per cubic centimetre is common in secondary-school and first-year university syllabi. It links to neighbouring topics Centimetre–gram–second system of units, Units of chemical measurement, Units of density, so understanding it makes those chapters shorter.
In everyday life: Look for Gram per cubic centimetre 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 Gram per cubic centimetre in 20 minutes

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

Frequently asked questions

What is Gram per cubic centimetre in simple terms?

The gram per cubic centimetre is a unit of density in International System of Units (SI), and is commonly used in chemistry. Its official SI symbols are g/cm3, g·cm−3, or g cm−3.

Why does Gram per cubic centimetre 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 Gram per cubic centimetre?

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 Gram per cubic centimetre.