Class 7 Exam > Class 7 Videos > Science Olympiad Class 7 > Introduction: Acids, Bases & Salts
Introduction: Acids, Bases & Salts Video Lecture | Science Olympiad Class 7
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FAQs on Introduction: Acids, Bases & Salts Video Lecture - Science Olympiad Class 7
| 1. What are acids and bases? |  |
Ans. Acids are substances that release hydrogen ions (H+) in water, while bases are substances that release hydroxide ions (OH-) in water. Acids have a sour taste and turn blue litmus paper red, while bases have a bitter taste and turn red litmus paper blue.
| 2. How are acids and bases different from salts? | |
Ans. Acids and bases are substances that can release ions in water, while salts are compounds formed by the reaction between an acid and a base. Acids and bases have characteristic properties, such as taste and effect on litmus paper, while salts have different properties depending on the combination of the acid and base used to form them.
| 3. What are some examples of common acids, bases, and salts? | |
Ans. Some common examples of acids include vinegar (acetic acid), lemon juice (citric acid), and hydrochloric acid. Examples of bases include baking soda (sodium bicarbonate), soap (sodium hydroxide), and antacids. Salts include table salt (sodium chloride), Epsom salt (magnesium sulfate), and baking powder (a mixture of sodium bicarbonate and cream of tartar).
| 4. How do acids and bases react with each other? | |
Ans. When an acid reacts with a base, they neutralize each other and form salt and water. This reaction is called a neutralization reaction. The hydrogen ions from the acid combine with the hydroxide ions from the base to form water, while the remaining ions combine to form a salt.
| 5. How are acids, bases, and salts used in everyday life? | |
Ans. Acids, bases, and salts have various uses in everyday life. Acids like vinegar are used for cooking and cleaning. Bases like soap and sodium hydroxide are used for cleaning and making products like detergents. Salts are used for seasoning food, preserving food, and in various industrial processes such as water treatment and manufacturing of chemicals.
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