HIGH SCHOOL CHEMISTRY MADE EASY
Designed for Cambridge O Level / IGCSE Chemistry Students
STUDY GUIDE 1
Writing Chemical Formulae Made Easy
O Level & IGCSE
Step-by-Step Mastery Guide
Step-by-step explanations Cl
NaCl Common mistakes explained
Exam-focused tips
Mg
FeS
C
MgO
K
ZnO
Si
KCl
Senzelweyinkosi Ngwenya
High School Chemistry Made Easy Series
, Writing Chemical Formulae Made Easy (O Level & IGCSE) | Step-by-Step Mastery Guide
COPYRIGHT & USAGE
© 2026 Senzelweyinkosi Ngwenya | High School Chemistry Made Easy
All rights reserved. No part of this document may be reproduced, distributed, or resold in any form without the
prior written permission of the author.
For permissions contact:
DISCLAIMER
This resource is not affiliated with or endorsed by Cambridge Assessment International Education (CAIE).
Cambridge O Level and IGCSE are registered trademarks of Cambridge Assessment International Education.
This is an independent educational resource created to support student learning.
A NOTE FROM THE AUTHOR
This resource was created with care to make chemistry accessible to every student. I know how challenging
chemical formulae can feel — I have spent seven years watching students struggle and then succeed once the
concept clicked. That is exactly what this guide is designed to do for you.
If you found this guide helpful, please leave a review on the platform where you purchased it. It means the world
to an independent educator and helps other students find this resource. Thank you sincerely for respecting the
work that went into creating it.
Senzelweyinkosi Ngwenya — High School Chemistry Made Easy
Senzelweyinkosi Ngwenya | High School Chemistry Made Easy – Page 1 of 11 – © 2026 Senzelweyinkosi Ngwenya. All rights
reserved. Unauthorised reproduction prohibited.
Designed for Cambridge O Level / IGCSE Chemistry Students
STUDY GUIDE 1
Writing Chemical Formulae Made Easy
O Level & IGCSE
Step-by-Step Mastery Guide
Step-by-step explanations Cl
NaCl Common mistakes explained
Exam-focused tips
Mg
FeS
C
MgO
K
ZnO
Si
KCl
Senzelweyinkosi Ngwenya
High School Chemistry Made Easy Series
, Writing Chemical Formulae Made Easy (O Level & IGCSE) | Step-by-Step Mastery Guide
COPYRIGHT & USAGE
© 2026 Senzelweyinkosi Ngwenya | High School Chemistry Made Easy
All rights reserved. No part of this document may be reproduced, distributed, or resold in any form without the
prior written permission of the author.
For permissions contact:
DISCLAIMER
This resource is not affiliated with or endorsed by Cambridge Assessment International Education (CAIE).
Cambridge O Level and IGCSE are registered trademarks of Cambridge Assessment International Education.
This is an independent educational resource created to support student learning.
A NOTE FROM THE AUTHOR
This resource was created with care to make chemistry accessible to every student. I know how challenging
chemical formulae can feel — I have spent seven years watching students struggle and then succeed once the
concept clicked. That is exactly what this guide is designed to do for you.
If you found this guide helpful, please leave a review on the platform where you purchased it. It means the world
to an independent educator and helps other students find this resource. Thank you sincerely for respecting the
work that went into creating it.
Senzelweyinkosi Ngwenya — High School Chemistry Made Easy
Senzelweyinkosi Ngwenya | High School Chemistry Made Easy – Page 1 of 11 – © 2026 Senzelweyinkosi Ngwenya. All rights
reserved. Unauthorised reproduction prohibited.
