1
IMAGES: Canva and AI-generated images based on typical examination-style questions. .Eastern Cape Department of Education. 2023. Grade 11
Physical Sciences Paper 2: Chemistry, November 2023. Provincial Examination.Eastern Cape Department of Education. 2023. Grade 11 Physical
Sciences Paper 2: Chemistry Marking Guideline, November 2023. Provincial Examination.Gauteng Department of Education. 2023. Grade 11 Physical
Sciences: Chemistry Paper 2, November 2023. Provincial Examination.Gauteng Department of Education. 2023. Grade 11 Physical Sciences:
Chemistry Paper 2 Marking Guidelines, November 2023. Provincial Examination. SACAI. 2020. Grade 11 Physical Sciences Paper 2, November
Examination, Task 7.2
Important: These study notes are revised and updated annually to align with the CAPS
curriculum and current examination requirements. The content is based on past
examination papers, tests and typical assessment question patterns.
The content was adapted and structured for examination preparation purposes. AI tools
were used to assist with formatting, rephrasing and differentiation.
These notes are designed to help learners:
• Understand key concepts
• Practise exam-style questions
• Identify important themes and patterns in assessments
• Revise important content in a structured way
To ensure learners work with the most relevant and up-to-date content, parents and
learners are encouraged to confirm that they are using the latest version of the notes. If
you are unsure whether you have the latest version, please feel free to contact me
at:
Please note that these notes are compiled as a structured study aid for examination
preparation. They do not replace the prescribed textbook or classroom instruction.
Important: Learners can use the Term 3 notes for focused Term 3 preparation.
Where applicable, it is also recommended that learners revise Term 1 and Term 2
notes together with the Term 3 notes.
Good luck
Juffrou Ansie
© 2026 Juffrou Ansie Study Notes. All rights reserved. This material may not be reproduced or distributed without written permission.
, 2
Contents
Quantitative Aspects of Chemical Change ................................................................. 2
Energy and Chemical Change ................................................................................. 12
Acids and Bases .................................................................................................... 18
Ideal Gases and Thermal Properties ........................................................................ 22
Quantitative Aspects of Chemical Change
Aspirin is known by the chemical name acetylsalicylic acid. The empirical formula
of aspirin consists of 60,0% carbon and 4,44% hydrogen and oxygen. Gauteng Provincial
Examination, Grade 11 Physical Sciences P2, November 2023.
The term empirical formula.
The simplest ratio in which the elements of the compound are bonded to each other
Determine the empirical formula of aspirin.
If the molecular mass of aspirin is 180 g.mol-1, what is its molecular formula?
© 2026 Juffrou Ansie Study Notes. All rights reserved. This material may not be reproduced or distributed without written permission.
, 3
The molar mass of hydrated sodium carbonate is found to be 268 g∙mol-1. The
formula of the hydrated sodium carbonate is Na2CO3.xH2O.
Calculate the number of moles of water (x) in the compound.
_______________________________________________________________
1,56 g of calcium carbonate is heated as shown in diagram below. EC/NOVEMBER 2023
The calcium carbonate decomposes according to the balanced equation:
0,163 g of CO2 is produced during this decomposition.
© 2026 Juffrou Ansie Study Notes. All rights reserved. This material may not be reproduced or distributed without written permission.
IMAGES: Canva and AI-generated images based on typical examination-style questions. .Eastern Cape Department of Education. 2023. Grade 11
Physical Sciences Paper 2: Chemistry, November 2023. Provincial Examination.Eastern Cape Department of Education. 2023. Grade 11 Physical
Sciences Paper 2: Chemistry Marking Guideline, November 2023. Provincial Examination.Gauteng Department of Education. 2023. Grade 11 Physical
Sciences: Chemistry Paper 2, November 2023. Provincial Examination.Gauteng Department of Education. 2023. Grade 11 Physical Sciences:
Chemistry Paper 2 Marking Guidelines, November 2023. Provincial Examination. SACAI. 2020. Grade 11 Physical Sciences Paper 2, November
Examination, Task 7.2
Important: These study notes are revised and updated annually to align with the CAPS
curriculum and current examination requirements. The content is based on past
examination papers, tests and typical assessment question patterns.
The content was adapted and structured for examination preparation purposes. AI tools
were used to assist with formatting, rephrasing and differentiation.
These notes are designed to help learners:
• Understand key concepts
• Practise exam-style questions
• Identify important themes and patterns in assessments
• Revise important content in a structured way
To ensure learners work with the most relevant and up-to-date content, parents and
learners are encouraged to confirm that they are using the latest version of the notes. If
you are unsure whether you have the latest version, please feel free to contact me
at:
Please note that these notes are compiled as a structured study aid for examination
preparation. They do not replace the prescribed textbook or classroom instruction.
Important: Learners can use the Term 3 notes for focused Term 3 preparation.
Where applicable, it is also recommended that learners revise Term 1 and Term 2
notes together with the Term 3 notes.
Good luck
Juffrou Ansie
© 2026 Juffrou Ansie Study Notes. All rights reserved. This material may not be reproduced or distributed without written permission.
, 2
Contents
Quantitative Aspects of Chemical Change ................................................................. 2
Energy and Chemical Change ................................................................................. 12
Acids and Bases .................................................................................................... 18
Ideal Gases and Thermal Properties ........................................................................ 22
Quantitative Aspects of Chemical Change
Aspirin is known by the chemical name acetylsalicylic acid. The empirical formula
of aspirin consists of 60,0% carbon and 4,44% hydrogen and oxygen. Gauteng Provincial
Examination, Grade 11 Physical Sciences P2, November 2023.
The term empirical formula.
The simplest ratio in which the elements of the compound are bonded to each other
Determine the empirical formula of aspirin.
If the molecular mass of aspirin is 180 g.mol-1, what is its molecular formula?
© 2026 Juffrou Ansie Study Notes. All rights reserved. This material may not be reproduced or distributed without written permission.
, 3
The molar mass of hydrated sodium carbonate is found to be 268 g∙mol-1. The
formula of the hydrated sodium carbonate is Na2CO3.xH2O.
Calculate the number of moles of water (x) in the compound.
_______________________________________________________________
1,56 g of calcium carbonate is heated as shown in diagram below. EC/NOVEMBER 2023
The calcium carbonate decomposes according to the balanced equation:
0,163 g of CO2 is produced during this decomposition.
© 2026 Juffrou Ansie Study Notes. All rights reserved. This material may not be reproduced or distributed without written permission.
