Group 7 (halogens) - Chlorine, Bromine And Iodine
Gbogbo ọrọ náà
Chlorine disinfects swimming pools, bromine was once used in photographic film, and iodine is dabbed onto cuts as an antiseptic. These elements belong to Group 7 of the Periodic Table - the halogens - a family of reactive non-metals whose properties follow striking patterns.
In this lesson you will learn the colours and physical states of chlorine, bromine, and iodine, explore the trends in their physical and chemical properties, and use those trends to predict the behaviour of halogens you have never encountered.
Ebumnobi
- Know the colours, physical states (at room temperature) and trends in physical properties of these elements
- Use knowledge of trends in Group 7 to predict the properties of other halogens
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Group 7 (halogens) - Chlorine, Bromine And Iodine. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Going down Group 7, the reactivity of the halogens: A) Increases B) Decreases C) Stays the same D) First increases then decreases Answer: B
- Which halogen is a liquid at room temperature? A) Fluorine B) Chlorine C) Bromine D) Iodine Answer: C
- Chlorine can displace bromine from potassium bromide because: A) Chlorine is less reactive B) Chlorine is more reactive C) Bromine is a gas D) Chlorine is a solid Answer: B
- Going down Group 7, the melting points: A) Decrease B) Increase C) Stay the same D) Fluctuate Answer: B
- How many electrons do halogens have in their outer shell? A) 1 B) 2 C) 7 D) 8 Answer: C
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Mụtakwuo ihe site na isi mmalite mepere emepe
-
Akụkụ akwụkwọ
Occurrence, Preparation, and Properties of Halogens
Describe the preparation, properties, and uses of halogens
"Chemistry: Occurrence, Preparation, and Properties of Halogens" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/18-11-occurrence-preparation-and-properties-of-halogens. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
Ndị otu ndị ọzọ bipụtara ha n'okpuru ikike mepere emepe, anyị na-ekele ha dị ka ha si chọọ. Njikọ na-emepe saịtị ha.
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Group 7 (halogens) - Chlorine, Bromine And Iodine? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
Budata Ngwa Ahụ Na Google Playstore
Ihe nile ichoro iji nwee ihe ịga nke ọma na JAMB, WAEC & NECO.
