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CHEMISTRY Class 8

Acids and Bases – 9 Properties, Useful Reaction & Examples

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  Acids and Bases Acids Those substances which turn blue litmus solution red are called acids. The term ‘acid’ has been derived from the Latin word ‘acidus’ which means sour.   Example: HCl, H2SO4 , HNO 3 etc   Properties of acids Acids have a sour taste Acids turn blue litmus to red. It conducts …

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metals and non-metals

Metal and Non metal For class 8 and 10

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Let’s start the introduction of metal and nonmetal Metal and Non-Metal Definition Metals Metals are elements that form positive ions by losing electrons or donating electrons. Metals are known as electropositive elements because they can form positive (+ve) ions by losing electrons. Ex: Iron, Aluminium, Copper, Silver, Gold, Platinum, Zinc, Tin, Lead, Mercury, Sodium, etc. …

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