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IB Chemistry HL 1.1 Introduction to the Particulate Nature of Matter Questions

Practise IB Chemistry HL 1.1 with evidence-led questions on particles, elements, compounds, mixtures and kinetic molecular theory.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Classify elements, compounds and mixtures and choose physical separation methods from component properties.
  • Use particle models and state symbols to explain states and state changes.
  • Relate Kelvin temperature to average kinetic energy and particle motion using the kinetic molecular model.

Covered syllabus points

1.1.1—Elements, compounds, and mixtures1.1.2—Kinetic molecular theory1.1.3—Temperature and kinetic energy

Learn this topic

Study 1.1 Introduction to the particulate nature of matter conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

Question 1

[Maximum number: 2]

Iron(II) sulfide can be produced by heating powdered iron and sulfur together.

Describe the difference between an element and a compound.

Question 2

[Maximum number: 2]

Alkanes are commonly occurring organic compounds.

The first four straight chain alkanes are gases at room temperature.

Boiling points of straight chain alkanes

Boiling points of straight chain alkanes

Explain why the volume occupied by a sample of propane increases sharply when the sample is heated up from 200 to 250 K at constant pressure.

Question 3

[Maximum number: 1]

The same amount of two gases, X and Y, are in two identical containers at the same temperature. What is the difference between the gases?

Figure for Question 3 — IB Chemistry HL
A

X has the higher molar mass.

B

Y has the higher molar mass.

C

X has the higher average kinetic energy.

D

Y has the higher average kinetic energy.

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