Atoms and Molecules
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This document is a science project submission by Shaurya Dubey of Class 9th to his teacher Mr. Ankit Prabhakar about elements and atoms. It includes an acknowledgement, introduction, and sections on an atom refresher, elements, atomic models including Bohr's model, and electrons. The project was created as a presentation using different features to fulfill the requirement of creating a presentation on a science topic.
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Elements and atoms
1) An atom is the basic building block of matter and is composed of protons, neutrons, and electrons. Protons and neutrons are located in the center nucleus, while electrons orbit around the nucleus.
2) Elements are substances made of only one type of atom. They are the basic building blocks that make up all molecules. The periodic table lists all known elements and their properties.
3) There are two common models of atomic structure - the Bohr model which depicts all subatomic particles, and the Lewis dot structure which represents only the outer shell electrons. Electrons are arranged into energy levels and shells around the nucleus according to specific rules.
la historia del atomo y su composicion elementos
- An atom is the basic building block of matter and is composed of protons, neutrons and electrons. Protons and neutrons are located in the center of the atom, called the nucleus, while electrons orbit around the nucleus.
- Elements are substances made of only one type of atom. They are the basic building blocks that make up all matter. The periodic table lists all known elements and provides information about their atomic structure.
- Atoms can be represented by two models - the Bohr model which depicts all subatomic particles, and the Lewis dot structure which shows only the outer shell electrons through dots or lines around the element's symbol.
Elements and Atoms.ppt
This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they contain protons, neutrons, and electrons. Elements are made of the same type of atom and are the basic substances that can be combined to form all chemical compounds and molecules. The periodic table lists all known elements and provides each element's atomic number, symbol, name, and atomic mass. The document also describes two common atomic models - the Bohr model, which depicts the subatomic particles within an atom, and the Lewis dot structure, which represents only the outer shell electrons through dots or lines.
Elements and Atoms
- Matter is made of atoms, which are the building blocks of all matter. Atoms contain protons, neutrons, and electrons. Protons and neutrons are located in the center nucleus, and electrons orbit the nucleus.
- Elements are the basic substances that atoms are made of. All elements are made up of the same parts - protons, neutrons, and electrons. The periodic table lists all known elements. It provides information like each element's symbol, atomic number, and atomic mass.
- There are two common models for representing atoms - the Bohr model, which shows all subatomic particles, and the Lewis dot structure, which shows only the outermost shell of electrons. These models can be used to
Elements and Atoms.pptx
This document provides an overview of atoms and elements for an 8th grade chemistry class. It defines key terms like matter, atoms and elements. Atoms are made up of protons, neutrons and electrons. Elements are the building blocks of all matter, made of atoms of the same type. The document explains atomic structure using the Bohr model, which depicts the nucleus and electron shells, and the Lewis dot structure, which represents outer shell electrons. Students are assigned an activity to build physical models and drawings of the first 20 elements using beans to represent subatomic particles and the periodic table.
Elements and Atoms.ppt
This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they consist of protons, neutrons, and electrons. The protons and neutrons are in the nucleus at the center, and electrons orbit around it. Elements are defined as unique atoms that are the basic units that make up all matter. Two common models of atoms are presented: the Bohr model, which depicts all subatomic particles, and the Lewis dot structure, which shows only the outer shell electrons. Examples are given of drawing each model for the element lithium. Readers are then instructed to build physical models and drawings of the first 20 elements using various beans to represent subatomic particles.
Elements and Atoms.ppt
This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they consist of protons, neutrons, and electrons. The protons and neutrons are in the nucleus at the center, and electrons orbit around it. Elements are made of the same type of atom and are the basic units that combine to form all molecules. Two common models of atoms are presented: the Bohr model which depicts all subatomic particles, and the Lewis dot structure which shows only the outer shell electrons. Examples are given of drawing each model for the element lithium. Readers are then instructed to build physical models and drawings of the first 20 elements using various beans and a fold-out chart.
Elements and Atoms (5).ppt
This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they consist of protons, neutrons, and electrons. The protons and neutrons are in the nucleus at the center, and electrons orbit around it. Elements are made of the same type of atom and are the basic units that can combine to form molecules. Two common models of atoms are presented: the Bohr model which depicts all subatomic particles, and Lewis dot structures which show only the outer shell electrons. Examples are given of drawing each model for specific elements like lithium.
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Elements and atoms
1) An atom is the basic building block of matter and is composed of protons, neutrons, and electrons. Protons and neutrons are located in the center nucleus, while electrons orbit around the nucleus.
2) Elements are substances made of only one type of atom. They are the basic building blocks that make up all molecules. The periodic table lists all known elements and their properties.
3) There are two common models of atomic structure - the Bohr model which depicts all subatomic particles, and the Lewis dot structure which represents only the outer shell electrons. Electrons are arranged into energy levels and shells around the nucleus according to specific rules.
la historia del atomo y su composicion elementos
- An atom is the basic building block of matter and is composed of protons, neutrons and electrons. Protons and neutrons are located in the center of the atom, called the nucleus, while electrons orbit around the nucleus.
- Elements are substances made of only one type of atom. They are the basic building blocks that make up all matter. The periodic table lists all known elements and provides information about their atomic structure.
- Atoms can be represented by two models - the Bohr model which depicts all subatomic particles, and the Lewis dot structure which shows only the outer shell electrons through dots or lines around the element's symbol.
Elements and Atoms.ppt
This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they contain protons, neutrons, and electrons. Elements are made of the same type of atom and are the basic substances that can be combined to form all chemical compounds and molecules. The periodic table lists all known elements and provides each element's atomic number, symbol, name, and atomic mass. The document also describes two common atomic models - the Bohr model, which depicts the subatomic particles within an atom, and the Lewis dot structure, which represents only the outer shell electrons through dots or lines.
Elements and Atoms
- Matter is made of atoms, which are the building blocks of all matter. Atoms contain protons, neutrons, and electrons. Protons and neutrons are located in the center nucleus, and electrons orbit the nucleus.
- Elements are the basic substances that atoms are made of. All elements are made up of the same parts - protons, neutrons, and electrons. The periodic table lists all known elements. It provides information like each element's symbol, atomic number, and atomic mass.
- There are two common models for representing atoms - the Bohr model, which shows all subatomic particles, and the Lewis dot structure, which shows only the outermost shell of electrons. These models can be used to
Elements and Atoms.pptx
This document provides an overview of atoms and elements for an 8th grade chemistry class. It defines key terms like matter, atoms and elements. Atoms are made up of protons, neutrons and electrons. Elements are the building blocks of all matter, made of atoms of the same type. The document explains atomic structure using the Bohr model, which depicts the nucleus and electron shells, and the Lewis dot structure, which represents outer shell electrons. Students are assigned an activity to build physical models and drawings of the first 20 elements using beans to represent subatomic particles and the periodic table.
Elements and Atoms.ppt
This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they consist of protons, neutrons, and electrons. The protons and neutrons are in the nucleus at the center, and electrons orbit around it. Elements are defined as unique atoms that are the basic units that make up all matter. Two common models of atoms are presented: the Bohr model, which depicts all subatomic particles, and the Lewis dot structure, which shows only the outer shell electrons. Examples are given of drawing each model for the element lithium. Readers are then instructed to build physical models and drawings of the first 20 elements using various beans to represent subatomic particles.
Elements and Atoms.ppt
This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they consist of protons, neutrons, and electrons. The protons and neutrons are in the nucleus at the center, and electrons orbit around it. Elements are made of the same type of atom and are the basic units that combine to form all molecules. Two common models of atoms are presented: the Bohr model which depicts all subatomic particles, and the Lewis dot structure which shows only the outer shell electrons. Examples are given of drawing each model for the element lithium. Readers are then instructed to build physical models and drawings of the first 20 elements using various beans and a fold-out chart.
Elements and Atoms (5).ppt
This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they consist of protons, neutrons, and electrons. The protons and neutrons are in the nucleus at the center, and electrons orbit around it. Elements are made of the same type of atom and are the basic units that can combine to form molecules. Two common models of atoms are presented: the Bohr model which depicts all subatomic particles, and Lewis dot structures which show only the outer shell electrons. Examples are given of drawing each model for specific elements like lithium.
Elements and Atoms.ppt
This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they consist of protons, neutrons, and electrons. The protons and neutrons are in the nucleus at the center, and electrons orbit around it. Elements are made of the same type of atom and are the basic units that can combine to form molecules. Two common models of atoms are presented: the Bohr model which depicts all subatomic particles, and Lewis dot structures which show only the outer shell electrons. Examples are given of drawing each model for specific elements like lithium.
Elements and Atoms.ppt
This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they consist of protons, neutrons, and electrons. Elements are the basic substances that cannot be broken down further by chemical means. The document explains atomic structure using two models: the Bohr model which depicts the atom's particles, and Lewis dot structures which represent the outer shell electrons. Examples of drawing lithium in each model are provided. Readers are then instructed to create Bohr and Lewis dot structure models of the first 20 elements using physical representations.
Elements and Atoms.ppt
This document provides an overview of atoms and elements. It discusses the parts of an atom including protons, neutrons and electrons. Atoms are the building blocks of elements, which are listed on the periodic table. The periodic table provides information like atomic number and mass. Electrons occupy shells or energy levels, and the outermost electrons are called valence electrons. Examples are provided for drawing lithium atoms and its Lewis dot structure.
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Atomic structure refers to the organization and composition of atoms, which are the basic building blocks of matter. At the center of an atom lies a dense nucleus composed of protons, which carry a positive charge, and neutrons, which are neutral. Surrounding the nucleus are electrons, negatively charged particles, arranged in shells or energy levels. These electrons orbit the nucleus in specific orbits, with each shell capable of holding a certain maximum number of electrons. The arrangement of these subatomic particles determines an atom's properties, including its chemical behavior and reactivity. Quantum mechanics describes the behavior of particles at the atomic level, revealing the probabilistic nature of electron distribution within an atom. Understanding atomic structure is fundamental to fields such as chemistry, physics, and materials science.
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The Rutherford gold foil experiment discovered the atomic nucleus. In this experiment, Rutherford beamed particles at a gold foil and observed some particles bouncing back at large angles, indicating a small, dense nucleus at the center of the atom. Dalton's atomic theory proposed that atoms of different elements can combine in simple whole number ratios to form compounds. Isotopes are atoms that have the same number of protons but different numbers of neutrons, giving them the same atomic number but different atomic mass numbers. The periodic table arranges elements into groups based on repeating properties and allows easy comparison of elemental properties.
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The document discusses the basic building blocks of matter at the atomic level. It explains that atoms are made up of protons, neutrons, and electrons. Protons are positively charged and found in the atom's nucleus along with neutrons, which have no charge. Electrons are negatively charged and orbit the nucleus. It provides examples of hydrogen, oxygen, and sodium atoms, showing their proton, neutron, and electron composition. The atomic number is the number of protons, while the mass number includes protons and neutrons. Atoms can gain or lose electrons to become ions that are electrically charged.
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The document discusses atomic structure. It explains that the atomic number is the number of protons in an atom and determines the element. The mass number is the total of protons and neutrons. Electrons sit in shells, with the first shell holding 2 electrons and subsequent shells holding 8 each. Elements are arranged in the periodic table by period and group. Periods refer to the number of electron shells, while groups refer to the number of electrons in the outermost shell, which determines an element's properties.
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The document discusses the kinetic theory of matter and the structure of atoms. It explains that according to the kinetic theory, matter is made of tiny particles that are always moving and their kinetic energy depends on temperature. It also describes how atoms are made up of protons, neutrons and electrons, and how elements are classified in the periodic table based on their proton and nucleon numbers. Purification methods like distillation and crystallization are also summarized.
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3) A review that atoms are made of protons, neutrons, electrons and the patterns on the periodic table reflect these subatomic particles. Isotopes and ion formations are also discussed.
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This document provides an overview of atoms, elements, molecules, and compounds. It discusses how everything is made up of atoms, which contain subatomic particles like protons, neutrons, and electrons. Atoms of the same element have the same number of protons. Elements are organized in the periodic table according to their properties and atomic structure. Atoms can bond together to form molecules, which are made of one or more elements. Compounds are molecules made of two or more different elements bonded together. The properties of compounds are different from the individual elements.
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- Atoms are the smallest units of matter and are made up of protons, neutrons and electrons. Protons and neutrons are located in the nucleus, while electrons orbit around the nucleus.
- Isotopes are atoms of the same element that have different numbers of neutrons. The number of protons defines the element.
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This document provides information about classifying matter and its composition. It defines pure substances as elements or compounds made of uniform particles and mixtures as substances with two or more types of particles. Pure substances undergo physical or chemical changes, which respectively involve changes in properties or the formation of new substances. The document also discusses atoms as the basic building blocks of matter, containing subatomic particles like protons, neutrons, and electrons. It introduces the periodic table as organizing the elements by their chemical properties and number of protons.
A++ mission 6 notes part i 2012
The document provides information about atoms and the structure of matter in three sections:
1. Atoms are the building blocks of matter and consist of protons, neutrons, and electrons. The arrangement of atoms determines the properties of different types of matter.
2. Atoms can combine to form compounds and molecules through chemical bonds. Compounds have unique properties that differ from their constituent elements.
3. Matter exists in four states - solid, liquid, gas, and plasma. The state depends on how tightly or freely the atoms and molecules are able to move. Solids have a fixed structure while gases spread freely.
Meeting 1 atomic structure part 1
No, isotopes of the same element do not necessarily have the same mass. While all isotopes of a given element have the same number of protons, they can have different numbers of neutrons. This means two isotopes of the same element will have the same atomic number but different mass numbers. The mass number takes into account the total number of protons and neutrons in the nucleus. So even though two isotopes will share the same number of protons, variations in the number of neutrons lead to differences in their overall mass.
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2) It also includes information on the history of atomic theory from Democritus to the Bohr model. Key scientists and their contributions to modern atomic theory are identified.
3) Details on atomic structure are given including the subatomic particles (proton, neutron, electron), isotopes, ions, and how the periodic table relates to atomic structure. Students are assigned homework reviewing the provided notes.
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1) It reviews subatomic particles, periods and groups of the periodic table, and electron configurations.
2) The objective is to predict oxidation numbers and draw Lewis dot diagrams by understanding valence electrons.
3) It defines valence electrons, oxidation numbers, and ionic bonds in chemical compounds.
4) Examples are given of writing chemical symbols, determining valence electrons, and drawing Lewis dot diagrams using the cross method.
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This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they consist of protons, neutrons, and electrons. Elements are the basic substances that cannot be broken down further by chemical means. The document explains atomic structure using two models: the Bohr model which depicts the atom's particles, and Lewis dot structures which represent the outer shell electrons. Examples of drawing lithium in each model are provided. Readers are then instructed to create Bohr and Lewis dot structure models of the first 20 elements using physical representations.
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The document discusses the basic building blocks of matter at the atomic level. It explains that atoms are made up of protons, neutrons, and electrons. Protons are positively charged and found in the atom's nucleus along with neutrons, which have no charge. Electrons are negatively charged and orbit the nucleus. It provides examples of hydrogen, oxygen, and sodium atoms, showing their proton, neutron, and electron composition. The atomic number is the number of protons, while the mass number includes protons and neutrons. Atoms can gain or lose electrons to become ions that are electrically charged.
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No, isotopes of the same element do not necessarily have the same mass. While all isotopes of a given element have the same number of protons, they can have different numbers of neutrons. This means two isotopes of the same element will have the same atomic number but different mass numbers. The mass number takes into account the total number of protons and neutrons in the nucleus. So even though two isotopes will share the same number of protons, variations in the number of neutrons lead to differences in their overall mass.
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3) Details on atomic structure are given including the subatomic particles (proton, neutron, electron), isotopes, ions, and how the periodic table relates to atomic structure. Students are assigned homework reviewing the provided notes.
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This document provides an overview of physical science concepts related to subatomic particles, the periodic table, oxidation numbers, and Lewis dot diagrams. The key points are:
1) It reviews subatomic particles, periods and groups of the periodic table, and electron configurations.
2) The objective is to predict oxidation numbers and draw Lewis dot diagrams by understanding valence electrons.
3) It defines valence electrons, oxidation numbers, and ionic bonds in chemical compounds.
4) Examples are given of writing chemical symbols, determining valence electrons, and drawing Lewis dot diagrams using the cross method.
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This document provides an overview of atoms and elements. It defines atoms as the building blocks of matter and notes they consist of protons, neutrons, and electrons. Electrons orbit the nucleus, which contains protons and neutrons. Elements are made of atoms of the same type and can be represented on the periodic table. The document then describes Bohr models for representing atomic structure and shows how to draw Bohr models and Lewis dot structures for specific elements like lithium.
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Pests of Storage_Identification_Dr.UPR.pdf
InIndia-post-harvestlosses-unscientificstorage,insects,rodents,micro-organismsetc.,accountforabout10percentoftotalfoodgrains
Graininfestation
Directdamage
Indirectly
•theexuviae,skin,deadinsects
•theirexcretawhichmakefoodunfitforhumanconsumption
About600speciesofinsectshavebeenassociatedwithstoredgrainproducts
100speciesofinsectpestsofstoredproductscauseeconomiclosses
ESR spectroscopy in liquid food and beverages.pptx
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Current descriptions of immersive learning cases are often difficult or impossible to compare. This is due to a myriad of different options on what details to include, which aspects are relevant, and on the descriptive approaches employed. Also, these aspects often combine very specific details with more general guidelines or indicate intents and rationales without clarifying their implementation. In this paper we provide a method to describe immersive learning cases that is structured to enable comparisons, yet flexible enough to allow researchers and practitioners to decide which aspects to include. This method leverages a taxonomy that classifies educational aspects at three levels (uses, practices, and strategies) and then utilizes two frameworks, the Immersive Learning Brain and the Immersion Cube, to enable a structured description and interpretation of immersive learning cases. The method is then demonstrated on a published immersive learning case on training for wind turbine maintenance using virtual reality. Applying the method results in a structured artifact, the Immersive Learning Case Sheet, that tags the case with its proximal uses, practices, and strategies, and refines the free text case description to ensure that matching details are included. This contribution is thus a case description method in support of future comparative research of immersive learning cases. We then discuss how the resulting description and interpretation can be leveraged to change immersion learning cases, by enriching them (considering low-effort changes or additions) or innovating (exploring more challenging avenues of transformation). The method holds significant promise to support better-grounded research in immersive learning.
The binding of cosmological structures by massless topological defects
Assuming spherical symmetry and weak field, it is shown that if one solves the Poisson equation or the Einstein field
equations sourced by a topological defect, i.e. a singularity of a very specific form, the result is a localized gravitational
field capable of driving flat rotation (i.e. Keplerian circular orbits at a constant speed for all radii) of test masses on a thin
spherical shell without any underlying mass. Moreover, a large-scale structure which exploits this solution by assembling
concentrically a number of such topological defects can establish a flat stellar or galactic rotation curve, and can also deflect
light in the same manner as an equipotential (isothermal) sphere. Thus, the need for dark matter or modified gravity theory is
mitigated, at least in part.
Applied Science: Thermodynamics, Laws & Methodology.pdf
When I was asked to give a companion lecture in support of ‘The Philosophy of Science’ (https://shorturl.at/4pUXz) I decided not to walk through the detail of the many methodologies in order of use. Instead, I chose to employ a long standing, and ongoing, scientific development as an exemplar. And so, I chose the ever evolving story of Thermodynamics as a scientific investigation at its best.
Conducted over a period of >200 years, Thermodynamics R&D, and application, benefitted from the highest levels of professionalism, collaboration, and technical thoroughness. New layers of application, methodology, and practice were made possible by the progressive advance of technology. In turn, this has seen measurement and modelling accuracy continually improved at a micro and macro level.
Perhaps most importantly, Thermodynamics rapidly became a primary tool in the advance of applied science/engineering/technology, spanning micro-tech, to aerospace and cosmology. I can think of no better a story to illustrate the breadth of scientific methodologies and applications at their best.
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...Scintica Instrumentation
Targeting Hsp90 and its pathogen Orthologs with Tethered Inhibitors as a Diagnostic and Therapeutic Strategy for cancer and infectious diseases with Dr. Timothy Haystead.Travis Hills of MN is Making Clean Water Accessible to All Through High Flux ...
By harnessing the power of High Flux Vacuum Membrane Distillation, Travis Hills from MN envisions a future where clean and safe drinking water is accessible to all, regardless of geographical location or economic status.
Compexometric titration/Chelatorphy titration/chelating titration
Classification
Metal ion ion indicators
Masking and demasking reagents
Estimation of Magnisium sulphate
Calcium gluconate
Complexometric Titration/ chelatometry titration/chelating titration, introduction, Types-
1.Direct Titration
2.Back Titration
3.Replacement Titration
4.Indirect Titration
Masking agent, Demasking agents
formation of complex
comparition between masking and demasking agents,
Indicators/Metal ion indicators/ Metallochromic indicators/pM indicators,
Visual Technique,PM indicators (metallochromic), Indicators of pH, Redox Indicators
Instrumental Techniques-Photometry
Potentiometry
Miscellaneous methods.
Complex titration with EDTA.
Mending Clothing to Support Sustainable Fashion_CIMaR 2024.pdf
Ozturkcan, S., Berndt, A., & Angelakis, A. (2024). Mending clothing to support sustainable fashion. Presented at the 31st Annual Conference by the Consortium for International Marketing Research (CIMaR), 10-13 Jun 2024, University of Gävle, Sweden.
Randomised Optimisation Algorithms in DAPHNE
Slides from talk:
Aleš Zamuda: Randomised Optimisation Algorithms in DAPHNE .
Austrian-Slovenian HPC Meeting 2024 – ASHPC24, Seeblickhotel Grundlsee in Austria, 10–13 June 2024
https://ashpc.eu/
Immersive Learning That Works: Research Grounding and Paths Forward
We will metaverse into the essence of immersive learning, into its three dimensions and conceptual models. This approach encompasses elements from teaching methodologies to social involvement, through organizational concerns and technologies. Challenging the perception of learning as knowledge transfer, we introduce a 'Uses, Practices & Strategies' model operationalized by the 'Immersive Learning Brain' and ‘Immersion Cube’ frameworks. This approach offers a comprehensive guide through the intricacies of immersive educational experiences and spotlighting research frontiers, along the immersion dimensions of system, narrative, and agency. Our discourse extends to stakeholders beyond the academic sphere, addressing the interests of technologists, instructional designers, and policymakers. We span various contexts, from formal education to organizational transformation to the new horizon of an AI-pervasive society. This keynote aims to unite the iLRN community in a collaborative journey towards a future where immersive learning research and practice coalesce, paving the way for innovative educational research and practice landscapes.
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aziz sancar nobel prize winner: from mardin to nobel
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GBSN - Biochemistry (Unit 6) Chemistry of Proteins
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Immersive Learning That Works: Research Grounding and Paths Forward
Basics of crystallography, crystal systems, classes and different forms
Basics of crystallography, crystal systems, classes and different forms
Atoms and Molecules
- 1. Acknowledgement • I Would Like To Express My Special Thanks of Gratitude To My Teacher Mr. Ankit sir Who Gave Me The Opportunity To Do this Project On ‘Elements And Atoms’ This Project Helped Me A Lot In Gaining Adequate Knowledge About The Topic. I Have Completed This Project After Proper Analysis And Research And I Came To know So Many Things Thanks again to all who helped me.
- 2. Introduction • Name- Shaurya Dubey Class- 9th Section- A3 Roll no.- 37 School- Shri Mahaprabhu Public School Title- Elements And Atoms Submitted To- Mr. Ankit Prabhakar
- 3. Computer Application Project-1 • Que- Create a presentation on any science topic and use as much feature as you can Content:- 1. An Atom Refresher 2. Elements 3.Atomic Model 4. Bohr’s Model 5.Electrons
- 4. Made by:- SHAURYA DUBEY 9TH a3 Elements & Atoms
- 5. An atom refresher • Matter is anything that takes up space and has mass. • All matter is made of atoms • Atoms are the building blocks of matter, sort of how bricks are the building blocks of houses.
- 6. An atom refresher • An atom has three parts: • Proton = positive • Neutron = no charge • Electron = negative • The proton & neutron are found in the center of the atom, a place called the nucleus. • The electrons orbit the nucleus. Picture from http://education.jlab.org/qa/atom_model_03.gif
- 7. What are elements? • Elements are the alphabet to the language of molecules. • To make molecules, you must have elements. • Elements are made of atoms. While the atoms may have different weights and organization, they are all built in the same way.
- 9. More about Elements.. • Elements are the building blocks of all matter. • The periodic table is a list of all of the elements that can build matter. It’s a little like the alphabet of chemistry. • The periodic table tells us several things…
- 10. Atom Models • There are two models of the atoms we will be using in class. • Bohr Model • Lewis Dot Structure
- 11. Bohr Model • The Bohr Model shows all of the particles in the atom. • In the center is circles. Each circle represents a single neutron or proton. Protons should have a plus or P written on them. Neutrons should be blank or have an N. • In a circle around the nucleus are the electrons. Electrons should have a minus sign or an e. + + - -
- 12. Electrons have special rules…. • You can’t just shove all of the electrons into the first orbit of an electron. • Electrons live in something called shells or energy levels. • Only so many can be in any certain shell.
- 13. Electrons have special rules…. • You can’t just shove all of the electrons into the first orbit of an electron. • Electrons live in something called shells or energy levels. • Only so many can be in any certain shell. • The electrons in the outer most shell of any element are called valance electrons.
- 14. Thank You!!