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Formula Sheet

Study of the First Element - Hydrogen — Formula Sheet

ICSE · Class 9 · Chemistry

9 formulas from Study of the First Element - Hydrogen (ICSE Class 9 Chemistry) on one page, grouped by topic. Part of the ICSE Class 9 Chemistry syllabus.

44 questions40 flashcards9 formulas & key relations5 concepts

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An infographic illustrating hydrogen's similarities to both Group 1 (alkali metals) and Group 17 (halogens) elements, explaining why its position is unique and debated.
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9 Entries · 3 Sections

Formulas and Key Relations

Position and Nature of Hydrogen

H ; H2 ; valency 1 ; electronic configuration 1

Atomic number 1

Hydrogen from Water

2K + 2H2O -> 2KOH + H2

2Na + 2H2O -> 2NaOH + H2

Ca + 2H2O -> Ca(OH)2 + H2

Mg + 2H2O -> Mg(OH)2 + H2

Mg + H2O -> MgO + H2

Activity Series and Preparation of Hydrogen

Arrangement of metals in decreasing order of reactivity in the form of a series is called the activity or reactivity series of metals.

K > Na > Ca > Mg > Al > Zn

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Frequently Asked Questions

What are the important topics in Study of the First Element - Hydrogen for ICSE Class 9 Chemistry?
Key topics in Study of the First Element - Hydrogen include Position, nature, and discovery of hydrogen, Hydrogen from water, acids, and alkalis, Laboratory preparation, purification, and collection of hydrogen, Industrial preparation, properties, and uses of hydrogen. Study these first, then practise questions on each for Class 9 exams.
How many formulas are in Study of the First Element - Hydrogen?
This sheet lists 9 formulas from Study of the First Element - Hydrogen, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Study of the First Element - Hydrogen for Class 9 exams?
Learn the core ideas first, then work through the 44 practice questions on Study of the First Element - Hydrogen. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Study of the First Element - Hydrogen

All ICSE Class 9 Chemistry Formula Sheet

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