Atoms, Ions and Compounds (OCR A-Level Chemistry A): Quizzes

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What type of ion do metal atoms form?

Cations (positive ions)

What charge do Group 6 non-metals form?

2−2-

In iron(III) oxide, what does the Roman numeral III indicate?

Iron has a 3+ charge

What charge does zinc form as an exception to the general pattern?

Zn2+\text{Zn}^{2+}

What is the formula for the sulfate ion?

SO42−\text{SO}_{4}^{2-}

What is the formula for aluminium oxide?

Al2O3\text{Al}_{2}\text{O}_{3}

Which of these elements exists as diatomic molecules?

Cl2\text{Cl}_{2}

What does the state symbol (aq) mean?

Aqueous (dissolved in water)

What is the critical rule when balancing equations?

Never change the subscripts in formulae

What is the correct formula for magnesium hydroxide?

Mg(OH)2\text{Mg}(\text{OH})_{2}

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Atoms, Ions and Compounds

Amount of Substance

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Atoms, Ions and Compounds

Amount of Substance

Acids and Redox

Electrons and Bonding

Shapes of Molecules and Intermolecular Forces

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