Ionic Bonding
Akopọ
Table salt dissolves in water and conducts electricity when molten, yet it has a melting point above 800 degrees Celsius. These properties seem contradictory until you understand the bonding inside: oppositely charged ions locked together by powerful electrostatic forces in a giant lattice.
In this lesson you will learn how ions form by electron transfer, memorise the charges on common ions, write formulae for ionic compounds, draw dot-and-cross diagrams, and explain why ionic substances have high melting points yet conduct electricity only when molten or dissolved.
Awọn Afojusun
- Understand how ions are formed by electron loss or gain
- Know the charges of common ions
- Write formulae for compounds formed between listed ions
- Draw dot-and-cross diagrams to show the formation of ionic compounds by electron transfer
- Understand ionic bonding in terms of electrostatic attractions
- Understand why compounds with giant ionic lattices have high melting and boiling points
- Know that ionic compounds do not conduct electricity when solid, but do conduct electricity when molten and in aqueous solution
Àwòrán ọpọlọ
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Ṣe ìdánrawò káàdì wọ̀nyí nínú áàpù
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Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Ionic 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.
- What type of particle is formed when a sodium atom loses one electron? A) A negative ion B) A positive ion C) A molecule D) An isotope Answer: B
- What is the formula of calcium chloride? A) CaCl B) CaCl2 C) Ca2Cl D) Ca2Cl3 Answer: B
- Why do ionic compounds have high melting points? A) They contain molecules B) They have weak intermolecular forces C) Strong electrostatic forces act between oppositely charged ions in a giant lattice D) They are always solids Answer: C
- In which state can an ionic compound conduct electricity? A) Solid only B) Gas only C) Molten or in aqueous solution D) In any state Answer: C
- In a dot-and-cross diagram for MgO, how many electrons does magnesium transfer to oxygen? A) 1 B) 2 C) 3 D) 6 Answer: B
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
Ionic Bonding
Explain the formation of cations, anions, and ionic compounds
"Chemistry: Ionic Bonding" 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/7-1-ionic-bonding. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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Abala ìwé ẹ̀kọ́
Molecular and Ionic Compounds
Define ionic and molecular (covalent) compounds
"Chemistry: Molecular and Ionic Compounds" 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/2-6-molecular-and-ionic-compounds. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
Àwọn àjọ mìíràn ló tẹ̀ wọ́n jáde lábẹ́ ìwé àṣẹ ṣíṣí, a sì dá wọn lọ́lá bí wọ́n ṣe béèrè. Àwọn ìjápọ̀ ń ṣí ojú òpó wọn.
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Ionic 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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