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The document discusses the historical discovery of the internal structure of the atom. It notes that protons and neutrons have similar mass while electrons are much lighter, and that protons and electrons have equal but opposite charges while neutrons have no charge. The text then provides an example of analyzing the composition of a neutral boron-10 atom in terms of its protons, neutrons, and electrons. Finally, it states that chemical reactions involve electron transfer or sharing between atoms, so an element's chemical properties depend on the number of electrons in its atoms.
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The document discusses the modern understanding of the structure of atoms. It notes that atoms are made up of protons, neutrons, and electrons. Protons and neutrons are in the nucleus, while electrons orbit the nucleus. Protons have a positive charge, electrons have a negative charge, and neutrons have no charge. The number of protons determines the element, while the number of neutrons varies between isotopes of that element. Chemical properties are determined by the number of electrons in the outer shell of the atom.
Atomic structure-1
Electrons orbit the nucleus in fixed energy levels called shells or orbits. The shell closest to the nucleus has the lowest energy, while shells farther away have higher energies. Atoms consist of electrons, protons, and neutrons. Protons and neutrons make up the nucleus at the center, while electrons orbit in shells surrounding the nucleus. The number of protons defines the element and is called the atomic number. The total number of protons and neutrons is the mass number. Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons, giving them different mass numbers but the same chemical properties. Electrons fill successive orbitals according to their energy levels.
ScienceShare.co.uk Shared Resource
Atoms are made up of protons, neutrons and electrons. Protons and neutrons are found in the nucleus and have a positive or neutral charge respectively. Electrons orbit the nucleus and have a negative charge. The number of protons determines the element, while the total number of protons and neutrons is the mass number. Isotopes are atoms of the same element with different numbers of neutrons. The periodic table arranges elements in order of atomic number.
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2. Describing the properties of ionic and covalent compounds, such as high melting points for ionic solids and variable states of matter for covalent substances.
3. Illustrating examples of single, double, and triple covalent bonds through Lewis dot structures of molecules like H2, O2, and N2.
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This document provides information about isotopes. It defines isotopes as atoms of the same element that have different numbers of neutrons. It discusses drawing atomic models showing protons, neutrons, and electrons. It explains that the number of protons defines the element, while the number of neutrons can vary between isotopes of the same element. The document includes sample isotope problems and exit slip questions for students to practice identifying isotopes based on atomic mass and number.
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The document discusses the structure of matter at the atomic level. It explains that all matter is made up of atoms, which themselves are made of even smaller particles like protons, neutrons, and electrons. The structure of atoms determines their chemical properties and how they interact. Atoms can bond together through the sharing or transfer of valence electrons in their outer shells.
Isotope isotone isobar
Isotopes are elements that have the same atomic number but different mass numbers due to differing numbers of neutrons. Isotopes have identical chemical properties but different physical properties. Isobars are elements that have the same atomic mass but different atomic numbers, so they have different chemical properties but the same physical properties. Isotones are elements that have the same number of neutrons.
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The document discusses the modern understanding of the structure of atoms. It notes that atoms are made up of protons, neutrons, and electrons. Protons and neutrons are in the nucleus, while electrons orbit the nucleus. Protons have a positive charge, electrons have a negative charge, and neutrons have no charge. The number of protons determines the element, while the number of neutrons varies between isotopes of that element. Chemical properties are determined by the number of electrons in the outer shell of the atom.
Atomic structure-1
Electrons orbit the nucleus in fixed energy levels called shells or orbits. The shell closest to the nucleus has the lowest energy, while shells farther away have higher energies. Atoms consist of electrons, protons, and neutrons. Protons and neutrons make up the nucleus at the center, while electrons orbit in shells surrounding the nucleus. The number of protons defines the element and is called the atomic number. The total number of protons and neutrons is the mass number. Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons, giving them different mass numbers but the same chemical properties. Electrons fill successive orbitals according to their energy levels.
ScienceShare.co.uk Shared Resource
Atoms are made up of protons, neutrons and electrons. Protons and neutrons are found in the nucleus and have a positive or neutral charge respectively. Electrons orbit the nucleus and have a negative charge. The number of protons determines the element, while the total number of protons and neutrons is the mass number. Isotopes are atoms of the same element with different numbers of neutrons. The periodic table arranges elements in order of atomic number.
Chemical bonding by Ms Rashmi Bhatia
The document discusses chemical bonding, including:
1. Defining ionic and covalent bonding, and explaining how different types of bonds are formed through electron sharing or transfer.
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3. Illustrating examples of single, double, and triple covalent bonds through Lewis dot structures of molecules like H2, O2, and N2.
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This document provides information about isotopes. It defines isotopes as atoms of the same element that have different numbers of neutrons. It discusses drawing atomic models showing protons, neutrons, and electrons. It explains that the number of protons defines the element, while the number of neutrons can vary between isotopes of the same element. The document includes sample isotope problems and exit slip questions for students to practice identifying isotopes based on atomic mass and number.
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The document discusses the structure of matter at the atomic level. It explains that all matter is made up of atoms, which themselves are made of even smaller particles like protons, neutrons, and electrons. The structure of atoms determines their chemical properties and how they interact. Atoms can bond together through the sharing or transfer of valence electrons in their outer shells.
Isotope isotone isobar
Isotopes are elements that have the same atomic number but different mass numbers due to differing numbers of neutrons. Isotopes have identical chemical properties but different physical properties. Isobars are elements that have the same atomic mass but different atomic numbers, so they have different chemical properties but the same physical properties. Isotones are elements that have the same number of neutrons.
Atomicsstructure
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- The number of protons determines the element and cannot be changed. Neutrons can vary between atoms of the same element, creating isotopes of that element.
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- Atoms are the smallest component of an element, having its chemical properties. Elements are pure substances made of one type of atom.
- The nucleus contains protons and neutrons at the center of an atom. Protons have a positive charge, neutrons have no charge, and electrons orbit around the nucleus and have a negative charge.
- The periodic table organizes elements by atomic number and similar properties, with periods representing electron shells and groups representing outer electrons.
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This document discusses three types of chemical bonds: metallic bonds, ionic bonds, and covalent bonds. It then describes different types of covalent bonds including nonpolar, polar, and coordinated covalent bonds. Finally, it discusses three types of intermolecular forces: dispersion forces, dipole-dipole forces, and hydrogen bonding. Dispersion forces exist between all molecules due to temporary dipoles, while dipole-dipole forces exist between polar molecules due to attraction of partial charges. Hydrogen bonding is a strong form of dipole-dipole force between a hydrogen atom covalently bonded to an electronegative atom like N, O, or F.
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This document discusses bond polarity and molecular polarity. It explains that polar covalent bonds form when electrons are shared unequally between atoms of different electronegativity. The more electronegative atom attracts the electrons more strongly, acquiring a partial negative charge, while the other atom acquires a partial positive charge. Whether a bond is nonpolar, moderately polar, or ionic depends on the electronegativity difference between the atoms. Polar bonds can result in polar molecules if the bond polarities do not cancel out. Intermolecular forces like dipole interactions and dispersion forces are responsible for molecular phase changes and arise from attractions between slightly positively and negatively charged regions on different molecules. Hydrogen bonds are especially strong dipole interactions that
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The document discusses the structure of atoms. It explains that atoms are made up of subatomic particles like electrons, protons, and neutrons. J.J. Thomson discovered the electron, while E. Goldstein discovered the positively charged particle, which was later named the proton. Ernest Rutherford's alpha particle scattering experiment provided evidence that the mass and positive charge of an atom are concentrated in a small, dense nucleus at the center. Niels Bohr later proposed that electrons orbit the nucleus in well-defined energy levels or shells. In 1932, James Chadwick discovered the neutron, which has no charge and a mass similar to a proton. The structure of atoms is defined by the number of protons, which determines the element, and
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Chemical bonding can occur via ionic bonds or covalent bonds. Ionic bonds form when electrons are transferred from one atom to another, leaving cation and anion. Covalent bonds form when atoms share electrons via overlapping orbitals. The octet rule states that atoms seek to obtain eight electrons in their valence shell. Hybridization is the mixing of atomic orbitals to form new hybrid orbitals for bonding. Common hybridizations include sp, sp2, and sp3 which determine molecular geometry. Bond properties like order, length, energy are influenced by hybridization.
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The document discusses the structure of atoms. It explains that atoms are made up of subatomic particles like electrons, protons, and neutrons. J.J. Thomson discovered the electron, while E. Goldstein discovered the positively charged particle, which was later named the proton. Ernest Rutherford's alpha particle scattering experiment provided evidence that the mass and positive charge of an atom are concentrated in a small, dense nucleus at the center. Niels Bohr later proposed that electrons orbit the nucleus in well-defined energy levels or shells. In 1932, James Chadwick discovered the neutron, which has no charge and a mass similar to a proton. The structure of atoms is defined by the number of protons, which determines the element, and
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This document discusses different chemical bonding theories including:
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- Ionic bonding which involves a complete transfer of electrons between atoms
- Lewis structures which represent bonding using shared electron pairs and the octet rule
- VSEPR theory which predicts molecular geometry based on electron pair repulsion
- Hybridization which involves mixing of atomic orbitals to form new hybrid orbitals
- Molecular orbital theory where atomic orbitals combine to form molecular orbitals of lower energy, providing stable bonding.
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1. The document discusses similarities between subatomic and astronomical levels, noting electrons orbiting nuclei like planets orbiting stars and spherical shapes at many scales.
2. It then notes Avogadro's constant of 6.022140857(74) ×1023 mol-1, which relates the number of entities at the macro and microscopic levels.
3. Based on the similarities observed and Avogadro's constant, the author postulates that there are exactly 6.022140857(74) ×1023 stars in the universe, equivalent to 1 mole of stars.
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The document discusses the structure of atoms. Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in shells. The nucleus is made up of positively charged protons and neutral neutrons, while electrons have a negative charge. The symbol for each element indicates the number of protons and total nucleons (protons + neutrons).
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Valence shell electron pair repulsion (VSEPR) theory is a model used in chemistry to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms. It is also named the Gillespie-Nyholm theory after its two main developers, Ronald Gillespie and Ronald Nyholm
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This document provides an outline for a presentation on the history and structure of atoms. It begins with the early ideas of Democritus and Thomson, then describes the atomic models of Rutherford, Bohr, and others. The structure of the atom is explained, including the nucleus, protons, neutrons, and electrons. Isotopes and isobars are also introduced. The presentation would provide details on the key scientists and experiments that led to the current understanding of atoms as tiny particles consisting of a nucleus surrounded by electrons.
Chapter 4
This document discusses the structure of atoms. It begins by defining an atom and outlining Dalton's atomic theory. It then explains that atoms are composed of subatomic particles like electrons, protons, and neutrons. The nucleus contains protons and neutrons, while electrons orbit around the nucleus. Different elements are distinguished by their atomic number, which is the number of protons. Isotopes are atoms that have the same number of protons but different numbers of neutrons. The average atomic mass takes into account the relative abundances of isotopes in a naturally occurring sample of an element.
structureofatom-150927071148-lva1-app6891 (1).pptx
The document discusses the structure and components of an atom. An atom consists of a small but dense nucleus containing protons and neutrons, surrounded by a cloud of electrons. The nucleus occupies a very small fraction of the atom's volume but contains virtually all of its mass. Protons are positively charged, electrons are negatively charged, and neutrons have no charge. The document also summarizes several historical models of the atom proposed by scientists like Thomson, Rutherford, and Bohr.
7248247.ppt
The document discusses the evolution of atomic theories from ancient Greek ideas to modern atomic structure. It covers the Greek concept of atoms as indivisible particles, Dalton's postulation that atoms are basic units that combine to form compounds, Thomson's "plum pudding" model depicting electrons in an atom, and Bohr's model of electrons orbiting the nucleus in fixed shells like planets around the sun. The modern atomic model includes protons and neutrons in the nucleus surrounded by electrons in shells, with the number of protons determining the element.
Chapter 6.1
The document discusses the fundamental particles and forces that make up atoms. It describes how atoms were discovered to be made up of even smaller particles, including electrons discovered by J.J. Thomson and the nuclear model developed by Rutherford based on experiments by Rutherford, Geiger, and Marsden. The document also discusses the three main subatomic particles (protons, neutrons, and electrons), isotopes, radioactive decay, and the four main forces (electromagnetic, strong nuclear, weak, and gravity) that act inside atoms.
Atoms and molecules best presentation
The document discusses the structure of atoms and various atomic models proposed over time. It begins by defining an atom as the smallest particle of an element consisting of protons, neutrons, and electrons. J.J. Thomson's cathode ray experiments discovered electrons. Rutherford's alpha particle scattering experiments showed that atoms have a small, dense nucleus. Bohr proposed discrete energy levels to explain the stability of atoms. Later, the neutron was discovered, completing the standard atomic model with protons and neutrons in the nucleus and electrons in shells or orbits around the nucleus.
Structure of an atom
The document summarizes different models of the atom. It describes the key particles that make up an atom - electrons, protons, and neutrons. It then discusses several historical models including Thomson's model which depicted the atom as a positively charged sphere with electrons embedded in it, Rutherford's model which established the nucleus at the center, and Bohr's model which proposed electrons orbit in defined shells. The document also outlines the distribution of electrons in the different atomic shells.
Valence Shell of the Atom
There are several misconceptions about the valence shell of the atom. The key questions that arise in the minds of the learners are:
Is valence shell really the outermost shell?
2. Are there only seven shells in an atom?
3. When shells are supposed to be made up of subshells, why can we not represent the subshells in the valence shell structure of the atom?
4. When electrons are said to occur in orbitals, why can we not indicate the orbitals in the valence shell structure?
4. How can we represent the origins for valance band and conduction band in the atomic structure?
5. What are some good metaphors for the core of the atom and the rest of the atom?
Here is a lesson created by Chemistry teachers to address these misconceptions.
Structure of atom
The document discusses the structure of an atom. It describes how an atom is made up of electrons, protons, and neutrons. The nucleus contains protons and neutrons and takes up a tiny fraction of the atom's space. Electrons orbit the nucleus and their distribution in different orbits is called the electronic configuration. The number of protons determines the element and is called the atomic number, while the total of protons and neutrons is the mass number. Different models of the atom developed over time, from Thomson's "plum pudding" model to Rutherford's nuclear model to Bohr's model of discrete electron orbits.
Atomic Structure Student Copy
The document discusses atomic structure and relates various atomic properties such as the number of protons, neutrons, and electrons to the atomic number, mass number, and charge. It also discusses electron configurations of the first 20 elements and how the charge on monatomic ions relates to their position on the periodic table. Finally, it mentions drawing Lewis diagrams of atoms, molecules, and ions.
Miguel And David Atoms
- Atoms are made up of protons, neutrons, and electrons. Protons are positively charged, electrons are negatively charged, and neutrons have no charge.
- Hydrogen is the simplest atom, with one proton and one electron. The electron orbits the nucleus due to the attraction between its negative charge and the proton's positive charge.
- Helium has two protons and two neutrons in its nucleus, and two orbiting electrons. The neutrons help hold the nucleus together by counteracting the proton's repelling charge.
Engg mat chapter 2
The document discusses atomic structure and bonding. It covers the following key points in 3 sentences:
Atomic structure consists of electrons, protons, and neutrons, with electrons orbiting the nucleus. Elements are made of one type of atom, and molecules form when two or more atoms bond together through ionic, covalent, or metallic bonding. Ionic bonding occurs through electron transfer between atoms, covalent bonding involves electron sharing, and metallic bonding results from delocalized electrons interacting with positive ion cores.
Matter.pptx
The document provides an introduction to the structure and composition of atoms. It discusses that atoms are made up of a nucleus containing protons and neutrons, with electrons orbiting the nucleus. It describes the key subatomic particles of protons, neutrons, and electrons. It also explains atomic number, mass number, isotopes, the periodic table of elements, electron shells, molecular formulas, ions, valence electrons, and the most abundant elements in the universe.
Chapter2 chemistry
This document provides an overview of atomic structure and chemical bonding. It discusses the following key points:
- About 25 elements are essential for life, with carbon, oxygen, hydrogen, and nitrogen making up 96% of living matter.
- Atoms are composed of protons, neutrons, and electrons. Chemical behavior is determined by the atom's electron configuration.
- Atoms combine via covalent bonds, which involve sharing electrons, and ionic bonds, which involve electron transfer. Weak bonds like hydrogen bonds also play important roles in biology.
- Covalent bonds form molecules, while ionic bonds form crystalline ionic compounds. Bond type depends on differences in electronegativity between atoms.
Structure Of The Atom.pdf notes important
The document provides information on the structure of atoms, including key experiments and models that helped reveal the internal structure of atoms. It discusses J.J. Thomson's cathode ray experiment that discovered electrons, Rutherford's alpha particle scattering experiment that showed atoms have a small, dense nucleus, and Bohr's model of electron orbits around the nucleus. It also covers topics like isotopes, mass number, atomic number, electron configuration, and valency.
Structure of the atom
This document discusses the historical development of atomic models from Thomson's plum pudding model to Rutherford's nuclear model. It describes key experiments like Rutherford's gold foil experiment that provided evidence against the plum pudding model and led to the proposal of the nuclear model. The document also defines basic atomic structure including protons, neutrons, electrons, and their arrangement in the Rutherford-Bohr atomic model. Isotopes, isobars, mass number, and atomic number are also defined.
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structureofatom-150927071148-lva1-app6891 (1).pptx
structureofatom-150927071148-lva1-app6891 (1).pptx
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Volcanoes form when molten rock flows from fissures in the Earth's surface caused by movement of tectonic plates. Volcanoes are classified as active, extinct, or dormant based on eruption likelihood. Active volcanoes frequently erupt, like Mount Etna and Mount Fujiyama. Extinct volcanoes were once active but will not erupt again, such as Kilimanjaro. Dormant volcanoes erupted in the past but are not currently active, though they could become active again, for example Vesuvius in Italy.
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Volcanoes form when molten rock flows from fissures in the Earth's surface caused by movement of tectonic plates. Volcanoes are classified as active, extinct, or dormant based on eruption likelihood. Active volcanoes frequently erupt, like Mount Etna and Mount Fujiyama. Extinct volcanoes were once active but will not erupt again, such as Kilimanjaro. Dormant volcanoes erupted in the past but are not currently active, though they could become active again, for example Vesuvius in Italy.
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Innovative work
This document appears to be a submission for an innovative work project from a student named Sindhya. S. studying Physical Science with a registration number of 13367011 at J B M C T E in Kayamkulam. The document title and student information provide the key details about what is being submitted.
Lesson template of sabareesh.p.s
This document outlines a teaching manual for a physical science lesson on factors affecting acceleration due to gravity. It provides details on the teacher, class, subject, duration, topic, and date. The curricular statement indicates students will generate knowledge on factors affecting gravity through discussion, demonstration, experimentation, observation and evaluation. Learning outcomes include recalling, understanding, applying, analyzing, and creating knowledge related to the topic. The lesson plan follows an inquiry training model in 5 phases from encountering the problem to analyzing thinking strategies.
Lesson template of sabareesh.p.s
This document outlines a teaching manual for a physical science lesson on factors affecting acceleration due to gravity. It provides details on the teacher, class, subject, duration, topic, and date. It describes the curriculum statement, new terms, facts, concepts, and learning outcomes related to developing different types of knowledge. It outlines the phases of an inquiry training model used in the lesson, including encountering the problem, developing explanations, and analyzing thinking strategies. It also discusses the social system, principles of reaction, support system, and instructional and nurturing effects of the model.
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3:国家专业人才认证中心颁发入库证书
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留信认证全称全国留学生信息服务网认证,隶属于北京中科院。①留信认证门槛条件更低,费用更美丽,并且包过,完单周期短,效率高②留信认证虽然不能去国企,但是一般的公司都没有问题,因为国内很多公司连基本的留学生学历认证都不了解。这对于留学生来说,这就比自己光拿一个证书更有说服力,因为留学学历可以在留信网站上进行查询!
B.为什么我们提供的毕业证成绩单具有使用价值？
查询留服认证是国内鉴别留学生海外学历的唯一途径，但认证只是个体行为，不是所有留学生都操作，所以没有办理认证的留学生的学历在国内也是查询不到的，他们也仅仅只有一张文凭。所以这时候我们提供的和学校颁发的一模一样的毕业证成绩单，就有了使用价值。
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[留学文凭学历认证(留信认证使馆认证)西蒙弗雷泽大学毕业证成绩单毕业证证书大学Offer请假条成绩单语言证书国际回国人员证明高仿教育部认证申请学校等一切高仿或者真实可查认证服务。
多年留学服务公司,拥有海外样板无数能完美1:1还原海外各国大学degreeDiplomaTranscripts等毕业材料。海外大学毕业材料都有哪些工艺呢？工艺难度主要由：烫金.钢印.底纹.水印.防伪光标.热敏防伪等等组成。而且我们每天都在更新海外文凭的样板以求所有同学都能享受到完美的品质服务。
国外毕业证学位证成绩单办理方法：
1客户提供办理西蒙弗雷泽大学西蒙弗雷泽大学毕业证假文凭信息：姓名生日专业学位毕业时间等（如信息不确定可以咨询顾问：我们有专业老师帮你查询）；
2开始安排制作毕业证成绩单电子图；
3毕业证成绩单电子版做好以后发送给您确认；
4毕业证成绩单电子版您确认信息无误之后安排制作成品；
5成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）
— — — — 我们是挂科和未毕业同学们的福音我们是实体公司精益求精的工艺！ — — — -
一真实留信认证的作用(私企外企荣誉的见证):
1：该专业认证可证明留学生真实留学身份同时对留学生所学专业等级给予评定。
2：国家专业人才认证中心颁发入库证书这个入网证书并且可以归档到地方。
3：凡是获得留信网入网的信息将会逐步更新到个人身份内将在公安部网内查询个人身份证信息后同步读取人才网入库信息。
4：个人职称评审加20分个人信誉贷款加10分。
5：在国家人才网主办的全国网络招聘大会中纳入资料供国家500强等高端企业选择人才。娃没到过没资格跟小伙伴们争论在山娃的记忆深处只有过年时父亲才会在家呆上三五天无奈相聚的时光总是太短太匆忙记得今年正月就在父亲扛起蛇皮袋将要跨出门槛的一刹那山娃突然抱紧父亲的大腿嚎啕大哭父亲吃力地掰开山娃的手哽咽道山娃好好听话好好念书到了暑假爸也接你进城爸的城好远好大好美山娃于是天天扳着手指算计着读书也格外刻苦无奈时间总过得太慢太慢每次父亲往家打电话山娃总抢着接听一个劲地提醒父亲别忘了正月说的话电涌
一比一原版(UBC毕业证)不列颠哥伦比亚大学毕业证如何办理
UBC硕士学位证成绩单【微信95270640】办理UBC毕业证【Q微信95270640】不列颠哥伦比亚大学毕业证书原版↑制作不列颠哥伦比亚大学学历认证文凭办理不列颠哥伦比亚大学留信网认证,留学回国办理毕业证成绩单文凭学历认证【Q微信95270640】专业为海外学子办理毕业证成绩单、文凭制作，学历仿制，回国人员证明、做文凭，研究生、本科、硕士学历认证、留信认证、结业证、学位证书样本、美国教育部认证百分百真实存档可查】
【实体公司】办不列颠哥伦比亚大学不列颠哥伦比亚大学毕业证成绩单学历认证学位证文凭认证办留信网认证办留服认证办教育部认证（网上可查实体公司专业可靠）
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【主营项目】
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四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
国外毕业证学位证成绩单办理流程：
1客户提供不列颠哥伦比亚大学不列颠哥伦比亚大学毕业证成绩单办理信息：姓名生日专业学位毕业时间等（如信息不确定可以咨询顾问：我们有专业老师帮你查询）；
2开始安排制作毕业证成绩单电子图；
3毕业证成绩单电子版做好以后发送给您确认；
4毕业证成绩单电子版您确认信息无误之后安排制作成品；
5成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）。
专业服务请勿犹豫联系我！本公司是留学创业和海归创业者们的桥梁。一次办理终生受用一步到位高效服务。详情请在线咨询办理,欢迎有诚意办理的客户咨询!洽谈。
招聘代理：本公司诚聘英国加拿大澳洲新西兰美国法国德国新加坡各地代理人员如果你有业余时间有兴趣就请联系我们咨询顾问：+微信:95270640伟大了居然能单匹马地跑到这么远这么大这么美的地方赚大钱高楼大厦鳞次栉比大街小巷人潮涌动山娃一路张望一路惊叹他发现城里的桥居然层层叠叠扭来扭去桥下没水却有着水一般的车水马龙山娃惊诧于城里的公交车那么大那么美不用买票乖乖地掷下二枚硬币空调享受还能坐着看电视呢屡经辗转山娃终于跟着父亲到家了山娃没想到父亲城里的家会如此寒碜更没料到父亲的城里竟有如此简陋的鬼地方父亲的家在高楼最底屋最下面很矮很黑是很不显各
一比一原版布拉德福德大学毕业证（bradford毕业证）如何办理
一模一样【微信：A575476】【布拉德福德大学毕业证（bradford毕业证）成绩单Offer】【微信：A575476】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信：A575476】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信：A575476】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
一比一原版(YU毕业证)约克大学毕业证如何办理
YU毕业证文凭证书【微信95270640】（约克大学毕业证高仿学位证书((+《Q微信95270640》))）购买YU毕业证修改YU成绩单购买约克大学毕业证办YU文凭办高仿毕业证约克大学毕业证购买修改成绩单挂科退学如何进行学历认证留学退学办毕业证书/ 出国留学无法毕业买毕业证留学被劝退买毕业证（非正常毕业教育部认证咨询） York University
约克大学毕业证成绩单大学Offer代考语言证书高仿教育部认证等一切高仿或者真实可查认证服务。
十年年留学服务公司,拥有海外样板无数能完美1:1还原海外各国大学等毕业材料。
海外大学毕业材料都有哪些工艺呢？凭借多年的制作经验本公司制作1:1原版高度还原约克大学约克大学毕业证学历书工艺由：《激光》《水印》《钢印》《烫金》《底纹》《防伪光标》《热敏防伪》《紫外线》凹凸版uv版等防伪技术一流高精仿度几乎跟学校100%相同！让您绝对满意。而且我们每天都在更新海外文凭的样板以求所有同学都能享受到完美的品质服务。
国外毕业证书学位证书办理流程：
1客户提供办理信息：姓名生日专业学位毕业时间等（如信息不确定可以咨询顾问：我们有专业老师帮你查询）；
2开始安排制作毕业证成绩单电子图；
3毕业证成绩单电子版做好以后发送给您确认；
4毕业证成绩单电子版您确认信息无误之后安排制作成品；
5成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）
【公司服务】：我們以质量求生存诚信为主质量为本客戶为先解您所忧专业的团队咨询顾问为您细心解答可详谈是真是假眼见为实让您真正放心平凡人生,尽我所能助您一臂之力让我們携手圆您梦想!无奈争来争去谁也说服不了谁只是吵个不休山娃听了一脸的羡慕和神往山娃早听父亲说过父亲的城很遥远得坐一天一夜的火车山娃没到过没资格跟小伙伴们争论在山娃的记忆深处只有过年时父亲才会在家呆上三五天无奈相聚的时光总是太短太匆忙记得今年正月就在父亲扛起蛇皮袋将要跨出门槛的一刹那山娃突然抱紧父亲的大腿嚎啕大哭父亲吃力地掰开山娃的手哽咽道山娃好好听话好好念书到了暑假爸也接你进城爸的城好远好大好美山娃于是天天扳着碌
Resumes, Cover Letters, and Applying Online
This webinar showcases resume styles and the elements that go into building your resume. Every job application requires unique skills, and this session will show you how to improve your resume to match the jobs to which you are applying. Additionally, we will discuss cover letters and learn about ideas to include. Every job application requires unique skills so learn ways to give you the best chance of success when applying for a new position. Learn how to take advantage of all the features when uploading a job application to a company’s applicant tracking system.
一比一原版(UVic毕业证)维多利亚大学毕业证如何办理
UVic毕业证成绩单【微信95270640】《如何办理UVic毕业证维多利亚大学文凭学历》【Q微信95270640】《维多利亚大学文凭学历证书》《维多利亚大学毕业证书与成绩单样本图片》毕业证书补办 Fake Degree做学费单《毕业证明信-推荐信》成绩单，录取通知书，Offer，在读证明，雅思托福成绩单，真实大使馆教育部认证，回国人员证明，留信网认证。网上存档永久可查！
如果您是以下情况，我们都能竭诚为您解决实际问题：【公司采用定金+余款的付款流程，以最大化保障您的利益，让您放心无忧】
1、在校期间，因各种原因未能顺利毕业，拿不到官方毕业证+微信95270640
2、面对父母的压力，希望尽快拿到维多利亚大学维多利亚大学毕业证成绩单；
3、不清楚流程以及材料该如何准备维多利亚大学维多利亚大学毕业证成绩单；
4、回国时间很长，忘记办理；
5、回国马上就要找工作，办给用人单位看；
6、企事业单位必须要求办理的；
面向美国乔治城大学毕业留学生提供以下服务:
【★维多利亚大学维多利亚大学毕业证成绩单毕业证、成绩单等全套材料，从防伪到印刷，从水印到钢印烫金，与学校100%相同】
【★真实使馆认证（留学人员回国证明），使馆存档可通过大使馆查询确认】
【★真实教育部认证，教育部存档，教育部留服网站可查】
【★真实留信认证，留信网入库存档，可查维多利亚大学维多利亚大学毕业证成绩单】
我们从事工作十余年的有着丰富经验的业务顾问，熟悉海外各国大学的学制及教育体系，并且以挂科生解决毕业材料不全问题为基础，为客户量身定制1对1方案，未能毕业的回国留学生成功搭建回国顺利发展所需的桥梁。我们一直努力以高品质的教育为起点，以诚信、专业、高效、创新作为一切的行动宗旨，始终把“诚信为主、质量为本、客户第一”作为我们全部工作的出发点和归宿点。同时为海内外留学生提供大学毕业证购买、补办成绩单及各类分数修改等服务；归国认证方面，提供《留信网入库》申请、《国外学历学位认证》申请以及真实学籍办理等服务，帮助众多莘莘学子实现了一个又一个梦想。
专业服务，请勿犹豫联系我
如果您真实毕业回国，对于学历认证无从下手，请联系我，我们免费帮您递交
诚招代理：本公司诚聘当地代理人员，如果你有业余时间，或者你有同学朋友需要，有兴趣就请联系我
你赢我赢，共创双赢
你做代理，可以帮助维多利亚大学同学朋友
你做代理，可以拯救维多利亚大学失足青年
你做代理，可以挽救维多利亚大学一个个人才
你做代理，你将是别人人生维多利亚大学的转折点
你做代理，可以改变自己，改变他人，给他人和自己一个机会嘿的笑连连说记得记得但别忘了拿奖状进城啊考试一结束山娃就迫不及待地给父亲挂电话：爸我拿奖了三好学生接我进城吧父亲果然没有食言第二天就请假回家接山娃离开爷爷奶奶的那一刻山娃又伤心得泪如雨下宛如军人奔赴前线般难舍和悲壮卧空调大巴挤长蛇列车山娃发现车上挤满了叽叽喳喳的同龄人皆一脸惊喜地四处瞅山娃不认识他们也无暇去套近乎一味地跟着父亲昼夜兼程第二天凌晨就辗转到了父亲的城哇父亲的城真的好大好美哟走出广州火父
官方认证美国旧金山州立大学毕业证学位证书案例原版一模一样
原版一模一样【微信：741003700 】【美国旧金山州立大学毕业证学位证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
原版制作(RMIT毕业证书)墨尔本皇家理工大学毕业证在读证明一模一样
学校原件一模一样【微信：741003700 】《(RMIT毕业证书)墨尔本皇家理工大学毕业证在读证明》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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Punya devi
- 3. Submitted by PUNYA DEVI. R JAMEELA BEEVI MEMORIAL CENTRAL FOR TEACHER EDUCATION
- 5. The text provides a historical perspective of how the internal structure of the atom was discovered. It is certainly one of the most important scientific discoveries of this century, and I recommend that you read through it. However, we will begin our discussion of the atom from the modern day perspective.
- 7. The important points to keep in mind are as follows: Protons and neutrons have almost the same mass, while the electron is approximately 2000 times lighter. Protons and electrons carry charges of equal magnitude, but opposite charge. Neutrons carry no charge (they are neutral). It was once thought that protons, neutrons and electrons were spread out in a rather uniform fashion to form the atom but now we know the actual structure of the atom to be quite different.
- 9. Example Lets start with a neutral boron 10 atom ೦} 10B Since the atom is a boron atom the periodic table tells us that there are 5 protons in the nucleus Z = 5. The atom is neutral so that the number of electrons must balance the number of protons, 5 electrons. The mass number is 10, so that the number of neutrons is A - Z = 10 - 5 = 5 neutrons.
- 10. How does the structure of the atom relate to its properties? Chemical reactions involve either the transfer or the sharing of electrons between atoms. Therefore, the chemical reactivity/ properties of an element is primarily dependent upon the number of electrons in an atom of that element. Protons also play a significant role because the tendency for an atom to either lose, gain or share electrons is dependent upon the charge of the nucleus.