Cambridge IGCSE Physics practice

Paper 3 structured question: The atom

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Paper

Marks

Topic

The atom

Exam-style question

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Paper 3Theory (Core)1 marks

The process of ion formation is essential in understanding chemical reactions.

Description

Magnesium (Mg) can lose two electrons to form Mg2+, while oxygen (O) can gain two electrons to form O2-.

a
State the charge of the magnesium ion formed in this process.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 3Theory (Core)1 marks

Description

When sodium (Na) reacts with chlorine (Cl), sodium loses one electron to become Na+, and chlorine gains that electron to become Cl-.

a
State the charge of the sodium ion formed in this reaction.
Your answer
Aim for approximately 1 distinct marking point.
[1]