Chemistry deals with the composition, structure, and properties of matter. Matter exists as solids, liquids, or gases depending on temperature and pressure. Pure substances consist of either one type of atom (elements) or combinations of atoms in a fixed ratio (compounds). Mixtures contain varying ratios of different substances. Dalton's atomic theory states that matter is made of atoms, atoms of different elements have different masses, and compounds form when atoms combine in fixed ratios.
Some basic concepts of chemistry
chapter 1 of class 11.
N.B : This is for reference only. Students are advised not to copy, but to take ideas and do the work in their own style-it builds your imagination.
This presentation is used to explain the Chemical Reaction Lesson for Grade Eight Students. It uncovers some of students' misconceptions in this domain.
Some basic concepts of chemistry
chapter 1 of class 11.
N.B : This is for reference only. Students are advised not to copy, but to take ideas and do the work in their own style-it builds your imagination.
This presentation is used to explain the Chemical Reaction Lesson for Grade Eight Students. It uncovers some of students' misconceptions in this domain.
Presentation is for the first chapter of class 11th Chemistry CBSE board. Presentation is having detailed description for some of the basic concepts like mole concept, matter in our surrounding etc.
The fundamentals of chemical equilibrium including Le Chatier's Principle and solved problems for heterogeneous and homogeneous equilibrium.
**More good stuff available at:
www.wsautter.com
and
http://www.youtube.com/results?search_query=wnsautter&aq=f
Presentation is for the first chapter of class 11th Chemistry CBSE board. Presentation is having detailed description for some of the basic concepts like mole concept, matter in our surrounding etc.
The fundamentals of chemical equilibrium including Le Chatier's Principle and solved problems for heterogeneous and homogeneous equilibrium.
**More good stuff available at:
www.wsautter.com
and
http://www.youtube.com/results?search_query=wnsautter&aq=f
Mczee explains Conservation of Linear Momentumyoumarks
Our Mczee again stuck in a climbing problem. This time with a balloon. But he learns a lot of physics with this experience. And guess who helps in understanding the stuff?
A checklist, from simple to more complex, of facts, concepts, skills, and questions to ask yourself when learning a new reaction in organic chemistry. From www.masterorganicchemistry.com
CHAPTER 1 -SOME BASIC CONCEPTS OF CHEMISTRY.PDFLUXMIKANTGIRI
This is a country chapter of book one we are all the basics are explain of chemistry their molarity molality and other topics some of the important equations and numerical questions are covered in this topic
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This topic focuses about the properties of matter. Matter is divided into two parts "Pure Substance" And "Mixture. Pure substance has two types (Element and Compound). While Mixture is divided into two types of mixture (Homogenous and Heterogenous mixture).
Basic concepts of chemistry class 8, 9, 10Supratim Das
Chemquest was established at Durgapur way back in 2003 by SUPRATIM DAS with specific objective to provide best Chemistry coaching to students of class XI-XII for preparation of competitive entrance exams. In last 17 years the institute has grown with hundreds of students joining TOP IIT/NIT/ Engineering and Medical Colleges every year and Chemquest has become a brand now in Durgapur widely acknowledge by parents and students.
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Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
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.
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.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
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.
1. Some Basic Concepts of Chemistry - Chapter Summary
By SUPRATIM DAS DURGAPUR-WEST BENGAL #9434008713
Chemistry deals with the composition, structure and properties of matter.
Anything that has mass and occupies space is called matter.
Matter mainly exists in three forms - solid, liquid and gaseous forms. These forms are inter convertible by changing
the temperature and pressure.
Solids have a definite volume and definite shape. The particles are closely attached and there is not much
freedom of movement.
Liquids does not have a definite shape but have a definite volume. The particles are not so close and there is a
freedom of movement.
Gases neither have definite shape nor have a definite volume. The particles are situated as far as they can and
are able to move freely.
BASIC CLASSIFICATION OF MATTER
Mixtures - are the combination of two or more atoms which are combined in a ratio
If the ratio is uniform throughout the mixture, then it is a homogeneous mixture
If the ratio is not uniform throughout the mixture, then it is a heterogeneous mixture
Pure Substances - consist of either one type of atoms or the combination of them in a fixed ratio.
If only one type of atom is present in it, then it is called an element
If more than one type is present, it is called a compound
2. Molecules are are the combination of two or more atoms
Physical Properties can be measured or identified without changing the composition of the substance.
Chemical Properties occur due to a chemical change on the constituents.
Mass:It is the amount of matter present in a substance. It is independent of location.
Weight: It is the amount of force exerted on an object by gravity. It changes according to the change in gravitational
force.
Volume: It is the amount of space occupied by an object.
LAWS OF CHEMICAL COMBINATION
1. Law of Conservation ofMass (Antonie Lavoisier) - Mass can neither be created nor be destroyed.
2. Law of Definite Proportions (Joseph Proust) - A given compound always contains the same elements in the
same proportion by mass.
3. Law of Multiple Proportions (John Dalton) - When two or more elements combine to form more than one
compound, a fixed mass of one compound to a different mass of other always brings simple whole number
ratios.
4. Gay Lussac's Law - When gases combine or are produced in a chemical reaction, they do so in a simple ratio
provided all gases are in the same temperature and pressure.
5. Avogadro's Law - Equal Volumes of gases at the same temperature and pressure should contain equal
number of molecules.
DALTON'S ATOMIC THEORY
1. Matter consist of indivisible atoms
2. All atoms of a given element have identical properties including identical mass. Atoms of different elements
differ in mass.
3. Compounds are formed when atoms of different elements combine in a fixed ratio.
4. Atoms are neither created or are destroyed in a chemical reaction.
Atomic Mass - It is defined as the mass equal to 1/12th the mass of a Carbon-12 atom. It is represented by 'amu'
(atomic mass unit) or 'u' (unified mass).
1 amu or 1 u = 1.66056 x 10-24
Average Atomic Mass - It is atomic mass of elements or compounds having isotopes. It is the sum of the product of
the Relative Abundance and Atomic mass of the Isotopes.
Molecular Mass - It is the sum of the atomic mass of the elements present in the molecule. Eg: CH4 - (1 X 12) + (4 X
1) = 16 amu
Formula Mass - It is used for measuring the molecular mass of the entities which does not exist in solid form. Eg:
NaCl
Avogadro Number - It is the amount of atoms or molecules present in one mole of a substance. Avogadro
Number(NA) = 6.023 X 1023
Molar Mass - Mass of one mole of a substance.
Percentage Composition - It is the Percentage of an element present in a compound.
Empirical Formula - It represents the simplest whole number ratio of various atoms present in a compound. It is
calculated in following steps:
1. Convert the given amount to grams
2. Calculate the number of moles for each element
3. Divide the rest of the moles with the smallest one among them
4. Write the ratio with respect to elements
Molecular Formula - It gives the exact number of various atoms in a given compound. It is calculated by:
1. Divide "Molar Mass" with "Empirical Formula"
2. Multiply the value with each element
3. Limiting Reagent - It is the reactant which gets consumed and thus influence the amount of product formed.
Mole Fraction ofA = number of moles of A/(number of moles of A + number of moles of B)
Mole Fraction ofB = number of moles of B/(number of moles of A + number of moles of B)
Molality:
Molarity:
Normality:
Molarity and Moles –Relationship