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Mind Map: Acid, Bases and Salts | Science Class 7 (Old NCERT)

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FAQs on Mind Map: Acid, Bases and Salts - Science Class 7 (Old NCERT)

1. What are acids and bases?
Ans. Acids are substances that release hydrogen ions (H+) in water and have a pH less than 7. Bases, on the other hand, are substances that release hydroxide ions (OH-) in water and have a pH greater than 7.
2. How do acids and bases react with each other?
Ans. When an acid reacts with a base, they undergo a neutralization reaction. The hydrogen ions (H+) from the acid combine with the hydroxide ions (OH-) from the base to form water (H2O) and a salt.
3. What are the properties of acids?
Ans. Acids have certain characteristic properties such as sour taste, ability to turn blue litmus paper red, ability to conduct electricity in aqueous solution, and the ability to react with metals to produce hydrogen gas.
4. What are the properties of bases?
Ans. Bases have certain characteristic properties such as bitter taste, ability to turn red litmus paper blue, ability to conduct electricity in aqueous solution, and the ability to react with fats and oils to form soap.
5. How are salts formed?
Ans. Salts are formed when an acid reacts with a base. During this reaction, the hydrogen ions (H+) from the acid combine with the hydroxide ions (OH-) from the base to form water (H2O), and the remaining positive and negative ions combine to form a salt.
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