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Worksheet about chemistry alkali and alkaline earth metals | ||
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| Subject: Chemistry | ||
| 11th Grade | ||
| Term 1 | ||
| Year: 2023/2024 | ||
| Size: 573.7KB | ||
| Number of clicks: 74 | ||
| Publish date:November 05, 2023 | ||
| Added by: Eman | ||
| Last download date: 2024-09-06 20:51:16 | ||
| Updated by: Eman9966 on 2023-11-05 06:08:47 | By: theodor P.Dhandayudhapani | |
| File info: The alkali metals and alkaline earth metals in chemistry: 1. Alkali Metals:- Alkali metals are a group of elements located in Group 1 of the periodic table, including lithium (Li), sodium (Na), potassium (K), and others. - They are highly reactive metals with a single valence electron in their outermost energy level. - Alkali metals have low densities, low melting points, and are silvery-white in appearance. - They are known for their vigorous reactions with water, producing hydrogen gas and forming alkaline solutions (hence the name "alkali"). - Alkali metals readily lose their valence electron to form +1 ions, making them highly reactive and easily forming compounds. - They are used in various applications such as batteries, alloys, and certain pharmaceutical compounds. 2. Alkaline Earth Metals:- Alkaline earth metals are a group of elements located in Group 2 of the periodic table, including beryllium (Be), magnesium (Mg), calcium (Ca), and others. - They are also reactive metals but less reactive than alkali metals. - Alkaline earth metals have two valence electrons in their outermost energy level. - They have higher melting points and densities compared to alkali metals. - Alkaline earth metals tend to lose their two valence electrons to form +2 ions. - They are commonly found in minerals and rocks, and they play essential roles in biological processes. - Alkaline earth metals are used in various applications such as construction materials, alloys, and as additives in fertilizers and healthcare products. Both alkali metals and alkaline earth metals are metallic elements with similar characteristics. They are good conductors of electricity and heat, and they have low electronegativity. It's important to note that alkali metals and alkaline earth metals are highly reactive due to their tendency to lose electrons. Therefore, they are typically stored in oil or inert environments to prevent their reaction with atmospheric gases, such as oxygen and moisture. In summary, alkali metals and alkaline earth metals are groups of metallic elements with distinct properties and reactivity. They play significant roles in various fields of science, industry, and technology. | ||
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