IB Chemistry SL 1.1 Introduction to the Particulate Nature of Matter

Practise classifying matter and using particle models to explain physical behaviour. Questions connect elements, compounds and mixtures with separation methods, then test changes…

Syllabus
First assessment 2025
Topic
1.1
Level
SL

Exam points

  • design a physical separation sequence from each component's solubility or magnetic behaviour
  • explain a state's properties using particle spacing, motion and intermolecular attraction
  • convert Celsius to kelvin and relate absolute temperature to average kinetic energy

Covered syllabus points

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

1.1 Introduction to the particulate nature of matter 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.

1.1 Introduction to the particulate nature of matter 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.

1.1 Introduction to the particulate nature of matter question 3

[Maximum number: 1]

Nitrogen dioxide, NO2\mathrm{NO}_{2}, is a brown, toxic and corrosive gas. It can be made in a school laboratory by heating a group II metal nitrate or by the reaction of copper, Cu , with concentrated nitric acid, HNO3\mathrm{HNO}_{3}.

The initial amount of NO2\mathrm{NO}_{2} was determined by titration. The oxide was first dissolved in water according to the following equation:

2NO2( g)+H2O(l)→HNO3(aq)+HNO2(aq)2 \mathrm{NO}_{2}(\mathrm{~g})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{HNO}_{3}(\mathrm{aq})+\mathrm{HNO}_{2}(\mathrm{aq})

The solution was made up to 250.0 cm3250.0 \mathrm{~cm}^{3} and 25.0 cm325.0 \mathrm{~cm}^{3} portions of this solution were then titrated against a 0.0500 moldm−30.0500 \mathrm{~mol} \mathrm{dm}^{-3} standard solution of sodium hydroxide, NaOH .

Calculate the values for temperature, T , in degrees kelvin, K , and complete the table.

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