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Chapter 5 of Class 7 Science covers topics related to Acids, Bases, and Salts. This chapter is essential to understand the chemical properties of substances and their reactions. In this article, we will discuss the key concepts covered in this chapter.
Acids and Bases
Acids and bases are two important types of substances that have different properties. Acids are sour in taste, and bases are bitter in taste. When an acid is mixed with a base, it results in a chemical reaction known as neutralization. The resulting substance is called a salt. The pH scale is used to measure the acidity or basicity of a substance. Substances with a pH less than 7 are acidic, and those with a pH greater than 7 are basic.
Chemical Reactions
In this chapter, students will also learn about different types of chemical reactions, such as neutralization reactions, displacement reactions, and precipitation reactions. They will learn how to balance chemical equations and write the chemical formulae of various compounds.
Acids, Bases, and Indicators
Indicators are substances that change their color in the presence of acids or bases. In this chapter, students will learn about different types of indicators and how they can be used to distinguish between acids and bases. They will also learn about litmus paper, which is a commonly used indicator.
Uses of Acids and Bases
Acids and bases have several important uses in our daily lives. For example, acids are used in the production of fertilizers, dyes, and medicines, while bases are used in the production of soaps, detergents, and cleaning agents. Students will also learn about the harmful effects of acids and bases on the environment.
Conclusion
In conclusion, Chapter 5 of Class 7 Science covers essential concepts related to acids, bases, and salts. This chapter is important to understand the chemical properties of substances and their reactions. Students will learn about different types of chemical reactions, indicators, and the uses of acids and bases in our daily lives.
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Red litmus paper in mixed of base is colour of blue
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