Periodic Classification of Elements and PeriodicityNEHANEHA67
PPT will cover all the history of periodic table and periodic properties of elements and their trends as well as Oxides, Halides, Hydrides and Position of Hydrogen
Periodic Classification of Elements and PeriodicityNEHANEHA67
PPT will cover all the history of periodic table and periodic properties of elements and their trends as well as Oxides, Halides, Hydrides and Position of Hydrogen
Chemistry power point presentation on Hydrocarbons, which covers all the basic topics and sub- topics. Including Alkane,alkene and alkyne. This power point also consists of preparation of hydrcarbons.
This a 90 page power point.
GooD LucK !!!
The presentation "Chemical Bonding" is prepared for class IX. It contains a brief introduction to bonding and a detailed study of types of chemical bonds, basically ionic and covalent, along with the characteristics of compounds formed by these bonds.
All constructive comments are welcome.
Chemistry in our daily life and its importanceAMIR HASSAN
Chemistry in our daily life and its importance
A Short Introduction to Chemistry and its branches.
There are five main branches of Chemistry:
1)Organic Chemistry
2)Inorganic Chemistry
3)Analytical Chemistry
4)Physical Chemistry
5)Biochemistry
Presented By: Amir Hassan Chemistry Department, Government Post Graduate College Mardan KP Pakistan.
This presentation is about the changes which we see in our day to day lives. These changes are classified into two types. Physical And Chemical Changes
Attacking the TEKS: Focus on Bonding presented by Claudia Wallace, ACT2 2010
This session will expose you to the new TEKS and College Readiness Standards. Ideas for sequencing and planning the unit will be shared along with tips for appropriate demos, labs, and assessments. The intended audience is for teachers with 3 or less years of experience or anyone who wants to delve deeper into the new standards.
Chemistry power point presentation on Hydrocarbons, which covers all the basic topics and sub- topics. Including Alkane,alkene and alkyne. This power point also consists of preparation of hydrcarbons.
This a 90 page power point.
GooD LucK !!!
The presentation "Chemical Bonding" is prepared for class IX. It contains a brief introduction to bonding and a detailed study of types of chemical bonds, basically ionic and covalent, along with the characteristics of compounds formed by these bonds.
All constructive comments are welcome.
Chemistry in our daily life and its importanceAMIR HASSAN
Chemistry in our daily life and its importance
A Short Introduction to Chemistry and its branches.
There are five main branches of Chemistry:
1)Organic Chemistry
2)Inorganic Chemistry
3)Analytical Chemistry
4)Physical Chemistry
5)Biochemistry
Presented By: Amir Hassan Chemistry Department, Government Post Graduate College Mardan KP Pakistan.
This presentation is about the changes which we see in our day to day lives. These changes are classified into two types. Physical And Chemical Changes
Attacking the TEKS: Focus on Bonding presented by Claudia Wallace, ACT2 2010
This session will expose you to the new TEKS and College Readiness Standards. Ideas for sequencing and planning the unit will be shared along with tips for appropriate demos, labs, and assessments. The intended audience is for teachers with 3 or less years of experience or anyone who wants to delve deeper into the new standards.
chemical bonding and molecular structure class 11sarunkumar31
hybridisation, bonding and antiboding, dipole moment, VSPER theory, Molecular orbital diagram, Phosphorous pentachloride, ionic bond, bond order, bond enthalpy, bond dissociation, sp and sp2hybridisation, hydrogen bonding,electron pair,lone pair repulsion, resonance structure of ozone, how to find electron pair and lone pair, sp3 hybridization of methane.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
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.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
1. Name: __________________________
Molecule Polarity PhET Lab
A study of electronegativity, bond polarity, and molecular polarity
http://phet.colorado.edu/en/contributions/view/3475
Introduction:
In this atomic-level simulation, you will investigate how atoms' electronegativity
value affects the bonds they produce. When two atoms bond, a pair of electrons is
shared between atoms. Electronegativity is a measure of a single atom's ability to
hoard electrons shared in that bond. In this lab you will work diligently, at your own pace, to answer a number of
questions. To begin, from what you've already learned about the protons and electrons in an atom, what would cause
an atom to have a high electronegativity value?
_______________________________________________________________________
Why might an atom have a low electronegativity value?
_______________________________________________________________________
Procedure:
Turn on (check) all view options.
Take your time and investigate how the binary compound's bond behaves when the
atom's electronegativity and orientation are changed. Do not rush through this step.
Describe the bond formed between two atoms with similar, low electronegativities.
_____________________________________________________________________
Describe the bond formed between two atoms with similar, high electronegativities.
_____________________________________________________________________
Describe the bond formed between two atoms with very different electronegativities.
_____________________________________________________________________
Describe (in your own words) what is meant by partial charges, δ- and δ+. ________________________________
δ- represents: _________________________________________________________________________________
δ+ represents: _________________________________________________________________________________
What happens when the electric field is applied to a very polar molecule? ________________________________
Why do you think this is? ________________________________________________________________________
What is electron density? _______________________________________________________________________
How does the density around a partial positive compare to the density of a partial negative? _________________
_____________________________________________________________________________________________
What would bring about a higher electron density around an atom? _____________________________________
2. A bond is characterized as ionic or covalent by comparing the differences between two atoms' electronegativities.
Describe an ionic bond in terms of the atoms' electronegativity values. ___________________________________
Describe a covalent bond in terms of the atoms' electronegativity values. _________________________________
Additionally, we further separate covalent bonds into polar covalent and nonpolar covalent. What would have to be the
case for a bond to be nonpolar covalent? _____________________________________________________
In this simulation realize that in addition to changing the
electonegativities, you may also move individual atoms by dragging them with
the mouse. Here, in addition to bond polarity (represented by the bond
dipole), the entire molecule may be polar (represented by the molecular dipole). It is this
molecular dipole that determines the polarity of the molecule and how it interacts with
other molecules and its environment. For instance, molecules with high molecular dipoles
tend to have high intermolecular forces. (Why?)
BTW: The molecular dipole is found using vector addition, adding the bond dipoles together; think a tug-of-war.
Take some time and adjust each of the atom's locations and electronegativity values several times. Observe how
the bond dipoles (between A-B and B-C) add to produce a molecular dipole.
How might a molecule with two strong bond dipoles have no molecular dipole at all? _______________________
_____________________________________________________________________________________________
How might a molecule have a very strong molecular dipole. ____________________________________________
"Like dissolves like" is a way to remember that molecules with similar molecular dipoles will tend to interact favorably
and mix. For instance, water (H2O) is a polar molecule. It will mix well (dissolve) polar molecules, such as ammonia
(NH3), a mixture often used in household cleaners. Both molecules possess strong molecular dipoles. A molecule such
as methane (CH4) would not dissolve well into water. Why? ______________________________
Before using the simulation, complete the table below (with a √) to predict which of the following should dissolve into
water. Create a Lewis-dot diagram (:Ӧ=C= Ӧ: ) for each to guide your thinking. (use a separate page)
Prediction (before using the simulation)
H2 N2 O2 F2 HF H2O CO2 HCN O3 NH3 BH3 BF3 CH2O CH4 CH3F CH2F2 CH3F CF4 CHCl3
√
Next, use the simulation to determine with of the species should dissolve in water.
H2 N2 O2 F2 HF H2O CO2 HCN O3 NH3 BH3 BF3 CH2O CH4 CH3F CH2F2 CH3F CF4 CHCl3
√
Finally, what type of solvent would be required to dissolve nonpolar compounds? __________________________