Group I Properties
Bayani Gaba-gaba
Drop a small piece of sodium into water and it fizzes, skates across the surface and may burst into flame. Potassium does the same, only more violently. These are the Group I alkali metals, a family so reactive that they must be stored under oil, and their behaviour changes in a clear, predictable way as you move down the group.
In this lesson you will learn the physical properties of lithium, sodium and potassium, the three trends you must know going down Group I, and the reasoning behind them. By the end you should be able to predict the properties of metals further down the group and justify your prediction.
Manufura
- Describe the Group I alkali metals, lithium, sodium and potassium, as relatively soft metals with general trends down the group, limited to: (a) decreasing melting point (b) increasing density (c) increasing reactivity.
- Predict the properties of other elements in Group I, given information about the elements.
Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Group I Properties. 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 is a property of the Group I alkali metals? A. They are very hard B. They are relatively soft C. They are unreactive D. They are non-metals Answer: B
- Going down Group I, the melting point: A. Increases B. Decreases C. Stays the same D. First rises then falls Answer: B
- Going down Group I, the reactivity: A. Increases B. Decreases C. Stays the same D. Is zero Answer: A
- Going down Group I, the density: A. Increases B. Decreases C. Stays the same D. Becomes negative Answer: A
- Which alkali metal reacts most vigorously with water? A. Lithium B. Sodium C. Potassium D. They are all equal Answer: C
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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 I Properties? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
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