Group 1 (alkali Metals) – Lithium, Sodium And Potassium
Bayani Gaba-gaba
Drop a pea-sized piece of potassium into water and it bursts into lilac flames, skittering across the surface in seconds. Lithium, by contrast, fizzes gently and takes its time dissolving. Both are Group 1 metals, yet the violence of their reactions is strikingly different, and that difference is the key to understanding chemical families.
In this lesson you will explore how the alkali metals react with water and air, discover why their reactivity increases as you move down the group, and learn to predict the properties of elements you have never even handled, all from their position in the periodic table.
Manufura
- understand how the similarities in the reactions of these elements with water provide evidence for their recognition as a family of elements
- understand how the differences between the reactions of these elements with air and water provide evidence for the trend in reactivity in Group 1
- use knowledge of trends in Group 1 to predict the properties of other alkali metals
- explain the trend in reactivity in Group 1 in terms of electronic configurations
Takardar Darasi
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Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Nazarin Darasi
Barka da kammala darasi akan Group 1 (alkali Metals) – Lithium, Sodium And Potassium. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which of the following is the most reactive alkali metal? A) Lithium B) Sodium C) Potassium D) Francium Answer: D
- What is produced when sodium reacts with water? A) Sodium oxide and hydrogen B) Sodium hydroxide and oxygen C) Sodium hydroxide and hydrogen D) Sodium chloride and hydrogen Answer: C
- The alkali metals become more reactive going down the group because: A) They have more protons B) The outer electron is closer to the nucleus C) The outer electron is further from the nucleus and easier to lose D) They have more electrons in the outer shell Answer: C
- Which Group 1 metal floats on water but does NOT catch fire? A) Potassium B) Rubidium C) Sodium D) Caesium Answer: C
- What type of solution is formed when a Group 1 metal reacts with water? A) Acidic B) Neutral C) Alkaline D) Saturated Answer: C
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan Group 1 (alkali Metals) – Lithium, Sodium And Potassium? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
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