Metallic Bonding
Akopọ
Metals make up the vast majority of the periodic table, and their distinctive properties - conducting electricity, bending without breaking, gleaming under light - all trace back to one structural feature: a lattice of positive ions surrounded by a sea of delocalised electrons.
This lesson introduces the metallic bonding model, shows you how to represent it in 2-D diagrams, and explains how this single model accounts for the high melting points, electrical conductivity and malleability that make metals so useful in everyday life.
Awọn Afojusun
- know how to represent a metallic lattice by a 2-D diagram
- understand metallic bonding in terms of electrostatic attractions
- explain typical physical properties of metals, including electrical conductivity and malleability
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Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Metallic Bonding. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- In a metallic lattice, the metal atoms have become: A) Negative ions B) Positive ions C) Neutral molecules D) Covalent pairs Answer: B
- Metals conduct electricity because they contain: A) Free ions that can move B) Covalent bonds that carry charge C) Delocalised electrons that are free to move D) Strong intermolecular forces Answer: C
- Which property of metals is explained by layers of ions being able to slide over each other? A) High melting point B) Electrical conductivity C) Malleability D) High density Answer: C
- Metallic bonding is best described as: A) The sharing of electron pairs between two atoms B) The transfer of electrons from a metal to a non-metal C) The electrostatic attraction between positive ions and delocalised electrons D) Weak intermolecular forces between molecules Answer: C
- Which of the following is NOT a typical property of metals? A) High melting point B) Brittle C) Good electrical conductor D) Malleable Answer: B
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
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Awọn Iwe Itọsọna Ti a Gba Nimọran
Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
The Solid State of Matter
Define and describe the bonding and properties of ionic, molecular, metallic, and covalent network crystalline solids
"Chemistry: The Solid State of Matter" 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/10-5-the-solid-state-of-matter. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Metallic Bonding? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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