Acid, Base and Salt

Subject: Science

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Lesson Info

  • Notes 4
  • Videos 12
  • Exercises 26
  • Practice Test 45
  • Skill Level Medium


Upon completion of this lesson, student must be able to:

  • Define acid, base and salt with their examples.
  • State the properties of acid, base and salt.
  • State the uses of acid base and salt in our daily use.
  • Identify indicators and their uses.



An acid is a substance which dissociates in water to give positively charged hydrogen (H+). Acids are generally sour in taste and react with the base to produce salt. This note contains further information about acid, its chemical and physical properties. Learn More


A base is defined as any substance which releases hydroxyl ions (OH-) when dissolved in water. Bases which are soluble in water are called alkalies. This note about bases provides information about bases its properties and common uses. Learn More


A salt is a compound formed by the partial or complete neutralization of an acid by a base. Basic properties of salt include its salty or bitter taste, solubility in water and its unique coloration. This note provides information about properties, preparation, uses of salts. Learn More


An indicator is a substance which changes color in the presence of acids or alkalis. The pH scale is a standard scale, which is used for measuring the approximate strength of an acid or an alkali solution. This note provides an information about the indicator, its type and features. Learn More

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