1. Ionic compounds form when oppositely charged ions attract each other to form electrically neutral compounds. The attraction between oppositely charged ions is called an ionic bond.
2. Many ionic compounds are binary, containing only two different elements. Sodium chloride is an example as it contains sodium and chlorine.
3. Ionic bonds produce crystalline structures where each positive ion is surrounded by negative ions and vice versa. These strong bonds give ionic compounds high melting and boiling points.
Ionic bond and properties of ionic compoundsneelusharma39
Ionic bond are formed by the transfer of electron from metal to non-metal. In ionic compounds, the cations and anions are held by strong electrostatic force of attraction. All ionic compounds exhibit unique properties.
Ionic bond and properties of ionic compoundsneelusharma39
Ionic bond are formed by the transfer of electron from metal to non-metal. In ionic compounds, the cations and anions are held by strong electrostatic force of attraction. All ionic compounds exhibit unique properties.
Definition of ionic compounds
Property of ionic compoundIn crystal formSolubility in waterHigh melting and boiling pointConductivity of electricity
Use of ionic compoundUse as dryersUse to make pans
Bonding and structure - ionic compounds, covalent compounds and metals. Relationship between intermolecular forces and physical properties. Allotropes.
Definition of ionic compounds
Property of ionic compoundIn crystal formSolubility in waterHigh melting and boiling pointConductivity of electricity
Use of ionic compoundUse as dryersUse to make pans
Bonding and structure - ionic compounds, covalent compounds and metals. Relationship between intermolecular forces and physical properties. Allotropes.
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Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
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Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
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Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
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Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
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This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Instructions for Submissions thorugh G- Classroom.pptx
Ionic bond and ionic compound
1. Name:……………………………………………
Grade: ……………10………………………..
Subject:Chemistry
:Date ………………………
Chapter 7 : Ionic compounds and Metals
Section 2 : Ionic bonds and Ionic compounds
1- Oppositely charged ions attract each other, forming
electrically neutral ionic compounds
Formation of an Ionic Bond
2- The electrostatic force that holds oppositely charged particles
together in an ionic compound is referred to as an ionic bond.
3- Compounds that contain ionic bonds are ionic compounds If
ionic bonds occur between metals and the nonmetal (oxygen) ,
oxides form. Most other ionic compounds are called salts.
Binary ionic compounds
4- Thousands of compounds contain ionic bonds. Many ionic
compounds are binary, which means that they contain only two
different elements
5- Sodium chloride (NaCl) is a binary compound because it
contains two different elements, which are sodium and
chlorine.
2. Compound formation and charge
Example: (calcium fluoride )
6- Calcium has the electron configuration [Ar] 4s 2 , and needs to
lose two electrons to attain the stable configuration of argon.
Fluorine has the configuration [He]2 s 2 2p 5 , and must gain one
electron to attain the stable configuration of neon. Because the
number of electrons lost and gained must be equal, two fluorine
atoms are needed to accept the two electrons lost from the
calcium atom. he overall charge of one unit of calcium fluoride
(CaF2 ) is zero
7- formation of an ionic compound such as sodium chloride can
be represented
3. Properties of Ionic Compounds
8- the ionic bonds produce unique physical structures, unlike those
of other compounds
9- A crystal lattice is a three-dimensional geometric arrangement
of particles
In a crystal lattice, each positive ion is surrounded by negative
ions, and each negative ion is surrounded by positive ions.
4. Physical properties
10- Melting point, boiling point, and hardness are physical properties
of matter that depend on how strongly the particles that make up the
matter are attracted to one another
11- the ability of a material to conduct electricity—depends on the
availability of freely moving charged particles.
12-In the solid state, the ions in an ionic compound are locked into
fixed positions by strong attractive forces. As a result, ionic solids do
not conduct electricity.
13-when an ionic solid melts to become a liquid or is dissolved in
solution. The ions are now free to move and conduct an electric
current.
14-Both ionic compounds in solution and in the liquid state are
excellent conductors of electricity.
15- An ionic compound whose aqueous solution conducts an electric
current is called an electrolyte
16- Because ionic bonds are relatively strong, ionic crystals require a
large amount of energy to be broken apart Thus, ionic crystals have
high melting points and high boiling points,
17- Ionic crystals are also hard, rigid, brittle solids due to the strong
attractive forces that hold the ions in place.
18- When an external force is applied to the crystal a force is strong
enough to overcome the attractive forces holding the ions in position
within the crystal—the crystal cracks or breaks apart
5. 19- The crystal breaks apart because the applied force repositions the
like-charged ions next to each other; the resulting repulsive force
breaks apart the crystal.
Energy and the Ionic Bond
20- During every chemical reaction, energy is either absorbed or
released.
21- If energy is absorbed during a chemical reaction, the reaction is
endothermic. If energy is released, it is exothermic
22- The formation of ionic compounds from positive ions and
negative ions is always exothermic.
23- The greater the lattice energy, the stronger the force of attraction.
24- crystal lattice is a three-dimensional geometric arrangement (
shape ) of particles In a crystal lattice, each positive ion is
surrounded by negative
25- Lattice energy is directly related to the size of the ions bonded.
Because the electrostatic force of attraction between opposite charges
increases as the distance between the charges decreases,
6. 26- Smaller ions produce stronger interionic attractions and greater
lattice energies.
27 - The lattice energy of a lithium compound is greater than
that of a potassium compound containing the same anion because the
lithium ion is smaller than the potassium ion.
28 - The value of lattice energy is also affected by the charge of the
ion.
29 - The ionic bond formed from the attraction of ions with larger
positive or negative charges generally has a greater lattice energy.