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Atomic Structure Isotopes
The document discusses atomic structure and isotopes. It recaps atomic structure, including the structure of the atom, relative masses and charges of protons, neutrons and electrons, chemical symbols, and electronic configuration. It then defines isotopes as atoms of the same element that contain the same number of protons but different numbers of neutrons. Examples of isotopes of oxygen are provided. Finally, some uses of radioactive isotopes are mentioned, such as in food irradiation, archaeological dating, smoke detectors, and as radioactive tracers.
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Atomic Structure Isotopes
- 1. Lesson Objectives1. RecapAtomic StructureNEW2. Isotopes
- 2. Lesson Objectives1. RecapAtomic StructureNEW2. Isotopes
- 3. Recap on AtomicStructureStructure of atomB. Relative masses and charges of proton, neutron and electronC. Chemical symbolsD. Electronic configuration
- 4. Recap on AtomicStructureStructure of atomB. Relative masses and charges of proton, neutron and electronC. Chemical symbolsD. Electronic configuration
- 5.
- 6. What is anAtom?Atoms are the smallest particle of an element.
- 7. What is anElement?pureAn element is a ____ substance that cannot be _____up into 2 or more simpler substances by chemical processes. spilt
- 8.
- 9. Bohr’s Atomelectrons inorbitsnucleushttp://www.chem.iastate.edu/group/Greenbowe/sections/projectfolder/flashfiles/atom.swf
- 10. Structure of AtomAnatom consists mostly of empty space.A positively charged nucleus, densely concentrated in the centre. The nucleus contains protons and neutrons, which are tightly packed.Negatively charged electrons move around the nucleus in fixed orbits or paths.10
- 11. Recap on AtomicStructureStructure of atomB. Relative masses and charges of proton, neutron and electronC. Chemical symbolsD. Electronic configuration
- 12. Recap on AtomicStructureStructure of atomB. Relative masses and charges of proton, neutron and electronC. Chemical symbolsD. Electronic configuration
- 13. Relative Charges &Relative Masses Of Protons, Neutrons & ElectronsWhen No. of proton = no. of electrons in an atom
- 14. It is electricallyneutral
- 15. It has nonet charge. Recap on Atomic StructureStructure of atomB. Relative masses and charges of proton, neutron and electronC. Chemical symbolsD. Electronic configuration
- 16. Recap on AtomicStructureStructure of atomB. Relative masses and charges of proton, neutron and electronC. Chemical symbolsD. Electronic configuration
- 17. Interpreting Chemical SymbolO16Mass=P+Nmassnumber(nucleon number)mass number is the total number of protons and neutrons in an atom.Number of neutrons in the oxygen atom is: 16 – 8 = 8.chemical symbol8proton number(atomic number)atomic number (proton number) is the number of protons in an atom.Each oxygen atom has 8 protons. As the number of electrons is equal to the number of protons in an atom, each oxygen atom contains 8 electrons.P=ENo. of protons= no. of electrons16
- 18. Recap on AtomicStructureStructure of atomB. Relative masses and charges of proton, neutron and electronC. Chemical symbolsD. Electronic configuration
- 19. Recap on AtomicStructureStructure of atomB. Relative masses and charges of proton, neutron and electronC. Chemical symbolsD. Electronic configuration
- 20. The Electronic Configurationof AtomsMass number(Nucleon)O16O8 Atomicnumber(Proton)
- 21. The Electronic Configurationof AtomsMg
- 22. Summary for AtomicStructure (I) The structure of an atomThe relative charges & relative masses of proton, neutron & electron Defined mass number & atomic numberLearnt how to interpret chemical symbolsThe electronic configuration of atoms
- 23. Lesson Objectives1. RecapAtomic StructureNEW2. Isotopes
- 24.
- 25. Isotopes1. Definition ofIsotopes2. Uses of Isotopes
- 26. Isotopes1. Definition ofIsotopes2. Uses of Isotopes
- 27. ActivityFind your fellowgroup members! (1min)
- 28. Definition of IsotopesIsotopesare atoms of the same element which contains the same number of protons but different number of neutrons.Same P different n
- 29. Isotopesmass numberOO17O1816proton number888Oxygen-17Oxygen-18Oxygen-16n = 8n = 17 – 8 = 9n = 18 – 8 = 10
- 30. IsotopesIsotopes havethe same chemical properties but slightly different physical properties
- 31. Q. Do allIsotopes of the same element have the same mass?
- 32. Isotopes1. Definition ofIsotopes2. Uses of Isotopes
- 33.
- 34. Uses of RadioactiveIsotopesFood irradiationArchaeological dating (carbon-dating)Smoke detectorsRadioactive tracers
- 35. Summary Recap onAtomic Structure1. Definition of Isotopes2. Uses of Isotopes
- 36. Definition of IsotopesIsotopesare atoms of the same element which contains the same number of protons but different number of neutrons.Same P different n
Editor's Notes
- #6 Pace;content; more interactiveHow many monomers to make polymer… molecular weight…Polymerisation does not only occur at high temperature… gas phase high presesure (polyethene)Dun generalize. High pressure for high density polymers… lower lower density.. Branched/unbranched…? Carbo, proteins n DNA are natural polymers… fats are not… C to C.. Cations to cathodesElectrolytes are salts mols that dissolve in water to ions that can conduct electrons..
- #11 Where in the atoms are these sub-atomic particles found?
- #24 Pace;content; more interactiveHow many monomers to make polymer… molecular weight…Polymerisation does not only occur at high temperature… gas phase high presesure (polyethene)Dun generalize. High pressure for high density polymers… lower lower density.. Branched/unbranched…? Carbo, proteins n DNA are natural polymers… fats are not… C to C.. Cations to cathodesElectrolytes are salts mols that dissolve in water to ions that can conduct electrons..