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Chapter 3 Atoms and Elements
... An atom • of an element is electrically neutral; the net charge of an atom is zero. • has an equal number of protons and electrons. number of protons = number of electrons Aluminum has 13 protons and 13 electrons. The net (overall) charge is zero. 13 protons (13+) + 13 electrons (13 -) = 0 ...
... An atom • of an element is electrically neutral; the net charge of an atom is zero. • has an equal number of protons and electrons. number of protons = number of electrons Aluminum has 13 protons and 13 electrons. The net (overall) charge is zero. 13 protons (13+) + 13 electrons (13 -) = 0 ...
Test 1
... All matter is made up of atoms, which are small, indivisible particles. Atoms can not be created, destroyed nor transformed. Atoms of a particular element are alike in all respects Atoms of different elements are different from each other Atoms can group together to form molecules. ...
... All matter is made up of atoms, which are small, indivisible particles. Atoms can not be created, destroyed nor transformed. Atoms of a particular element are alike in all respects Atoms of different elements are different from each other Atoms can group together to form molecules. ...
atom
... All matter is composed of extremely small particles called atoms. Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties. Atoms cannot be subdivided, created, or destroyed. Atoms of different elements combine ...
... All matter is composed of extremely small particles called atoms. Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and other properties. Atoms cannot be subdivided, created, or destroyed. Atoms of different elements combine ...
Topic 3 Note Outline
... numbers that are not integers. • For example, the atomic mass of Cl is often quoted on periodic tables as 35.5, and may be represented thus, 35.5Cl17. This does not mean that there are 17 protons, 17 electrons and 18.5 neutrons in an atom of chlorine. It is not possible to have a fraction of a neutr ...
... numbers that are not integers. • For example, the atomic mass of Cl is often quoted on periodic tables as 35.5, and may be represented thus, 35.5Cl17. This does not mean that there are 17 protons, 17 electrons and 18.5 neutrons in an atom of chlorine. It is not possible to have a fraction of a neutr ...
Chapter 4: The Structure of the Atom
... through which one or more negatively charged electrons move. the nucleus is very small and very dense…it contains most of the mass of the atom According to Rutherford’s new atomic model (looks like a peach with a pit), most of an atom consists of electrons moving rapidly through empty space surr ...
... through which one or more negatively charged electrons move. the nucleus is very small and very dense…it contains most of the mass of the atom According to Rutherford’s new atomic model (looks like a peach with a pit), most of an atom consists of electrons moving rapidly through empty space surr ...
Radioactivity
... • Unlike all previously discovered chemical reactions, radioactivity sometimes results in the formation of completely new atoms. Radioactivity results from having an unstable nucleus. When these nuclei lose energy and break apart, decay occurs. Radioactive decay releases energy from the nucleu ...
... • Unlike all previously discovered chemical reactions, radioactivity sometimes results in the formation of completely new atoms. Radioactivity results from having an unstable nucleus. When these nuclei lose energy and break apart, decay occurs. Radioactive decay releases energy from the nucleu ...
NOTES: ATOMIC THEORY
... of protons) 1 photon (no mass/no charge, carries electromagnetic force) Four Universal Forces (in order of strength, from the strongest to the weakest): 1. Strong nuclear force (holds p+ & no together in nucleus since same charges repel) 2. Weak nuclear force (responsible for nuclear (radioactive) d ...
... of protons) 1 photon (no mass/no charge, carries electromagnetic force) Four Universal Forces (in order of strength, from the strongest to the weakest): 1. Strong nuclear force (holds p+ & no together in nucleus since same charges repel) 2. Weak nuclear force (responsible for nuclear (radioactive) d ...
atomic - Ibiblio
... While you’re researching the numbers of particles inside each of these atom types, you may come across these terms: atomic number and atomic mass (sometimes called atomic weight). Be prepared to discuss what these two terms mean. Answer 7 • The chemical identity of the atoms: protons. • The mass of ...
... While you’re researching the numbers of particles inside each of these atom types, you may come across these terms: atomic number and atomic mass (sometimes called atomic weight). Be prepared to discuss what these two terms mean. Answer 7 • The chemical identity of the atoms: protons. • The mass of ...
Quantitative periodic table – dominoes
... Quantitative periodic table – dominoes Teaching notes This is a domino style activity. There are 32 cards, allowing it to be used with a whole class. The activity could also be done individually, in pairs or in small groups to produce a complete ordered set of cards. Differentiation: the cards gene ...
... Quantitative periodic table – dominoes Teaching notes This is a domino style activity. There are 32 cards, allowing it to be used with a whole class. The activity could also be done individually, in pairs or in small groups to produce a complete ordered set of cards. Differentiation: the cards gene ...
NUCLEAR CHEMISTRY
... many or too few neutrons relative to the number of protons. • No amount of neutrons can hold a nucleus together once it has more that 82 protons. All of the elements with an atomic number greater than 82 have only unstable isotopes. • Unstable atoms emit energy in the form of radiation when they bre ...
... many or too few neutrons relative to the number of protons. • No amount of neutrons can hold a nucleus together once it has more that 82 protons. All of the elements with an atomic number greater than 82 have only unstable isotopes. • Unstable atoms emit energy in the form of radiation when they bre ...
Key Concept Summary - Bellingham High School
... graph known as the belt of stability. The majority of radioactive nuclei occur outside this belt. ...
... graph known as the belt of stability. The majority of radioactive nuclei occur outside this belt. ...
how did we find out about nuclear power? isaac asimov
... Chadwick felt that something had to be knocking out those protons. Since a proton is a massive particle, what was knocking them out had to be massive, too. Electrons, for instance, were too light to knock protons out of a nucleus. The massive new particle, whatever it was, couldn't have an electric ...
... Chadwick felt that something had to be knocking out those protons. Since a proton is a massive particle, what was knocking them out had to be massive, too. Electrons, for instance, were too light to knock protons out of a nucleus. The massive new particle, whatever it was, couldn't have an electric ...
Unit 5 EW Tasks (1)
... ...gamma radiation has a greater range in air and ...and should follow an inverse square law (this There is a simple statement that αparticles have a will still be detected over a metre away from the could be described instead of named). range of a few cm in air so the count rate will source (above ...
... ...gamma radiation has a greater range in air and ...and should follow an inverse square law (this There is a simple statement that αparticles have a will still be detected over a metre away from the could be described instead of named). range of a few cm in air so the count rate will source (above ...
AP Chemistry Summer Assignment - Belle Vernon Area School District
... The summer assignment for AP Chemistry has two parts. 1. Complete the practice problems in this packet. You may use the resources listed below as well as any notes/worksheets from Accel. Chem that you may have. 2. You need to master the formulas, charges, and names of the common ions. On the first w ...
... The summer assignment for AP Chemistry has two parts. 1. Complete the practice problems in this packet. You may use the resources listed below as well as any notes/worksheets from Accel. Chem that you may have. 2. You need to master the formulas, charges, and names of the common ions. On the first w ...
The atom: Isotopes (Grade 10) [NCS]
... The chemical properties of an element depend on the number of protons and electrons inside the atom. So if a neutron or two is added or removed from the nucleus, then the chemical properties will not change. This means that such an atom would remain in the same place in the Periodic Table. For examp ...
... The chemical properties of an element depend on the number of protons and electrons inside the atom. So if a neutron or two is added or removed from the nucleus, then the chemical properties will not change. This means that such an atom would remain in the same place in the Periodic Table. For examp ...
PDF Format - 1 slide per page
... How do the mass and charge of a 14C nucleus compare with those of a 12C nucleus? (A) The mass of 14C is 50% larger, while the charge is the same. ((B)) Both the mass and the charge g of 14C are the same as those of 12C. (C) Both the mass and charge of 14C are one-sixth larger. (D) The mass is the s ...
... How do the mass and charge of a 14C nucleus compare with those of a 12C nucleus? (A) The mass of 14C is 50% larger, while the charge is the same. ((B)) Both the mass and the charge g of 14C are the same as those of 12C. (C) Both the mass and charge of 14C are one-sixth larger. (D) The mass is the s ...
Bohr`s Theory of the Atom
... What do you picture when you think of an atom? (What does it look like?) ...
... What do you picture when you think of an atom? (What does it look like?) ...
irm_ch11
... 11.61 a. Balance the mass numbers: products [2(3)] = reactants [2(1) + x] = 6; x = 4 Balance the atomic numbers: products (2 + x) = reactants [2(2)] = 4; x = 2 The particle having a mass number of 4 and an atomic number of 2 is: ...
... 11.61 a. Balance the mass numbers: products [2(3)] = reactants [2(1) + x] = 6; x = 4 Balance the atomic numbers: products (2 + x) = reactants [2(2)] = 4; x = 2 The particle having a mass number of 4 and an atomic number of 2 is: ...
Big Science from the Small World of Atom
... 9. Why are the noble gases in group VIII chemically stable? 10. Give a couple of examples on how electron beams are used in modern nanotechnology? ...
... 9. Why are the noble gases in group VIII chemically stable? 10. Give a couple of examples on how electron beams are used in modern nanotechnology? ...
Atomic Theory
... Ion - atom with the same number of protons but a different number of electrons i.e. an atom with a charge! ...
... Ion - atom with the same number of protons but a different number of electrons i.e. an atom with a charge! ...
File - Mrs. Hille`s FunZone
... Proposed that all matter acts like waves Developed the deBroglie’s hypothesis. ...
... Proposed that all matter acts like waves Developed the deBroglie’s hypothesis. ...
Nucleus and Radioactivity
... not enough of them are paired with protons to yield stability. Such nucleii do however exist in nature but their life spans are limited. With the passage of time more and more of these nucleii are naturally disintegrating by a process called radioactivity. The heaviest naturally ocurring element is ...
... not enough of them are paired with protons to yield stability. Such nucleii do however exist in nature but their life spans are limited. With the passage of time more and more of these nucleii are naturally disintegrating by a process called radioactivity. The heaviest naturally ocurring element is ...
Atoms - Discover Earth Science
... There is not just one path that the electrons travel in. Th There are ““shells” h ll ” surrounding di th the nucleus that the electrons can fill. Each shell can only hold a certain number of electrons. ...
... There is not just one path that the electrons travel in. Th There are ““shells” h ll ” surrounding di th the nucleus that the electrons can fill. Each shell can only hold a certain number of electrons. ...