Calculating Mass of Substances (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes

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The Mole
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What does a mole measure in chemistry?

The number of particles

How many particles are in one mole of any substance?

6.02×10236.02 \times 10^{23}

Who is Avogadro's number named after?

Amedeo Avogadro

Why do chemists use moles to count atoms and molecules?

They are too tiny to count individually

The mass of one mole of a substance equals its ArAr or MrMr in which units?

Grams

What is the mass of one mole of carbon (CC)?

12 grams

What is the mass of one mole of water (H2OH_2O)?

18 grams

A dozen means 12 items. What does this analogy illustrate about moles?

Moles are a way to count particles

Explore OCR GCSE Chemistry A (Gateway Science Suite) Revision Notes by Topics

Measurement, Mass & Equations

Calculating Mass of Substances

Yield & Atom Economy

Concentration of Solutions

Amount of Substance & Gas Volume

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Measurement, Mass & Equations

Calculating Mass of Substances

Yield & Atom Economy

Concentration of Solutions

Amount of Substance & Gas Volume

Explore OCR GCSE Chemistry A (Gateway Science Suite) Flashcards by Topics

Measurement, Mass & Equations

Calculating Mass of Substances

Yield & Atom Economy

Concentration of Solutions

Amount of Substance & Gas Volume

Explore OCR GCSE Chemistry A (Gateway Science Suite) Exam Questions by Topics

Measurement, Mass & Equations

Calculating Mass of Substances

Yield & Atom Economy

Concentration of Solutions

Amount of Substance & Gas Volume

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