IB Chemistry Topic Structure 1. Models of the Particulate Nature of Matter Questionbank (SL/HL)

IB Chemistry Topic Structure 1. Models of the Particulate Nature of Matter Questionbank (SL/HL) | RevisionDojo

Practice IB Chemistry Topic Structure 1. Models of the Particulate Nature of Matter with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for Structure 1. Models of the Particulate Nature of Matter and mirrors Paper 1A, 1B, 2 style where relevant.

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Paper

Level

Question 1

HLPaper 2

The elements sodium and magnesium are located in Period 3 of the periodic table and show predictable patterns in electron arrangement.

Write the electron configuration of sodium ( $Z = 11$ ) and magnesium ( $Z = 12$ ).

[1]

Deduce the number of core and valence electrons in each atom.

[2]

State and explain which atom has a higher first ionization energy.

[2]

Magnesium can also form a $M g^{2 +}$ ion. Explain how its electron configuration changes and why this ion is stable.

[2]

Question 2

HLPaper 1A

Which of the following explains why high-resolution mass spectrometry can distinguish between $^{79} Br$ and $^{81} Br$ ?

Question 3

HLPaper 1A

Which element has the following ground-state electron configuration: $[Ar] 4 s^{1} 3 d^{5}$ ?

Question 4

SL & HLPaper 1A

Which atom has the electron configuration $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{4}$ ?

Question 5

SL & HLPaper 1A

Which statement explains why gases are compressible but solids are not?

IB Chemistry Structure 1. Models of the Particulate Nature of Matter Questionbank

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