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Acids,Bases and Salts — Revision Notes

CBSE · Class 10 · Science

Acids,Bases and Salts revision notes for CBSE Class 10 Science: 4 topics in quick points. Part of the CBSE Class 10 Science syllabus.

71 questions80 flashcards8 formulas & key relations5 concepts

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An infographic showing common acid-base indicators (litmus, phenolphthalein, methyl orange, turmeric, red cabbage) and the distinct color changes they exhibit in acidic, neutral, and basic solutions.
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Key Topics to Revise

1

1. Acids, Bases and Indicators

  • Acids are sour and bases are bitter.
  • Litmus is a natural indicator extracted from lichen.
  • Litmus is purple in neutral solution.
2

2. Reactions of Acids and Bases

  • Acids react with metals to form salt and hydrogen gas.
  • General reaction: Acid + Metal → Salt + Hydrogen gas.
  • Zinc reacts with sodium hydroxide to form sodium zincate and hydrogen gas.
3

3. Acids, Bases in Water and Ion Formation

  • Acids show acidic behaviour only in aqueous solution.
  • Hydrogen ions do not exist alone in water; they combine with water to form hydronium ions.
  • HCl in water forms hydronium and chloride ions.
4

4. pH and Strength of Acids and Bases

  • pH is a scale for measuring hydrogen ion concentration.
  • The p in pH stands for potenz, meaning power.
  • pH usually ranges from 0 to 14.

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Full Notes

Key Concepts

Acids turn blue litmus redA metal reacts with an acidMetal carbonates and metal hydrogencarbonates reactThe reaction between an acidMetal oxides react with acids

Frequently Asked Questions

What are the important topics in Acids,Bases and Salts for CBSE Class 10 Science?
Key topics in Acids,Bases and Salts include Acids, Bases and Indicators, Reactions of Acids and Bases, Acids, Bases in Water and Ion Formation, pH and Strength of Acids and Bases. Study these first, then practise questions on each for the CBSE Class 10 board exam.
How should I revise Acids,Bases and Salts for the CBSE Class 10 board exam?
Learn the core ideas first, then work through the 71 practice questions on Acids,Bases and Salts. 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.

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