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Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
Bonding and Structure Grade 10
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Bonding and Structure Grade 10

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PowerPoint to teach bonding & structure to grade 10 students according to SA Caps 2014

PowerPoint to teach bonding & structure to grade 10 students according to SA Caps 2014

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  • 1. Bonding & Structure K Warne
  • 2. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Bonding O H2O O H2O O O Bonding takes place when atoms react to form molecules. Example: Two hydrogen molecules and one oxygen molecule react to form two water molecules.
  • 3. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Atomic Radius  Note the trends in atomic radius across the periodic table.
  • 4. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net VALENCY – No of BONDS  Valency – number of electrons lost or gained to have a FULL valence level. (Outer shell) = number of bonds made by element H He Li Be B C N O F Ne Valence electrons – those in outer shell. METALS – valency = G No. NON – METALS valency = G.no - 8 1 2 3 4 3 2 1 0
  • 5.  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net O x x x x xx O x x x x xx O x x x x xx O x x x x xx O x x xx x x O x x x x xx O O “Dot Cross Diagrams” - Lewis & Couper Notation Lewis Diagrams Couper Notation Chemical Formulae ………… Name:Oxygen
  • 6.  Click to edit Master text styles  Second level  Third level  Fourth level  Fifth level SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Cl Covalent Molecules  H2, O2, F2, Cl2, Br2, N2, HCl, H2O, NH3, CH4  CO2, NH4 +, CL H X
  • 7. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Ionic Bonding  Formed when there is a …………. of …………………...  Formed between ………….. and ………………….  Metals …………………….. and become ……………………... ions - CATIONS.  Non metals …………………... and become …………………………. ions - ANIONS.  …………………………… between oppositely charged ions bonds the ions together. Na . .. :Cl: - .. Na + . :Cl: .. .. Na . + : Cl: --> [Na]+ [Cl] - . ELECTROSTATIC ATTRACTION
  • 8. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Lithium atom (Li) 3 protons (+3) 3 electrons (-3) Total charge 0 Lithium ion (Li+) 3 protons (+3) 2 electrons (-2) Total charge (+1) + Li .  [Li]+ + e- Ionic Bonding
  • 9. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Ionic Crystal The iond in ionic substances pack into GIANT IONIC structures called LATTICES, The ions are arranged to give the lowest possible energy system. Strong ionic bonds exist throughout the structure giving ionic substances HIGH melting & boiling points, HIGH densities etc.
  • 10. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net
  • 11. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net ELECTRON AFFINITY The amount of ENERGY RELEASED when an electron is added to a gaseous atom. This always accompanies the formation of an ionic bond. e-
  • 12. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Formation of Ionic Bond A large amount of energy (lattice) is released when the gaseous ions bond together into the ionic crystal lattice. Ionic compounds are therefore very stable and require large amounts of energy to break the bonding. Ionic compounds have HIGH MELTING POINTS we say they are Na(s) + 1/2 Cl2(g) NaCl(s) Na(g) + 1/2 Cl2(g) Na(g) + Cl(g) Na+ (g) + e- + Cl(g) Na+ (g) + Cl- (g) Ionisation Energy Dissociation Energy Sublimation Energy Electron Affinity Lattice Energy
  • 13. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net MUST BE LEARNT BY HEART! ONE TWO THREE Hydrogen H + Beryllium Be 2+ Aluminium Al 3+ Lithium Li + Magnesium Mg 2+ Iron(III) Fe 3+ Sodium Na + Calcium Ca 2+ Potassium K + Barium Ba 2+ Silver Ag + Lead Pb 2+ Copper(I) Cu + Zinc Zn 2+ Ammonium NH4 + Iron(II) Fe 2+ Oxonium H3O + Copper(II) Cu 2+ VALENCY TABLE 1
  • 14. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Bonding - Metallic Bonding - Exists between _________________. - Metal electrons are _____________ - therefore they become ______________________ (move from one atom to another). - This leaves _______________ - which become surrounded by a ‘sea’ of ______________________ electrons. - A force of _______________________ exists between the delocalized ___________________ and the positive ___________- which forms the ___________________ bond. All the _____________ of metals can be explained in terms of this bonding. + + + + + + + + + + + + + + + + + + + + + + + + + + + + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  • 15. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Explaining Metal Properties Property Explanation Malleable Ductile Conductors of electricity Shiny (Luster)
  • 16. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Bonding Summary Covalent    Ionic • • • Metallic • • H x H• Cl-Na+ Properties • • • • • Properties • • • • • Properties • • • • • . H-H Eg
  • 17. Strong covalent bonds Network Solids Properties: • Strong hard • conducts electricity - delocalised electrons - Weaker (van der waals) forces between the layers • layers slide over each other – so you can write with graphite and it is a lubricant Diamond Graphite Properties: • Strong/ hard/brittle – high m. & bpts. • Electrical insulator (electrons held in bonds) in all phases – no ions. • insoluble
  • 18. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Phases of Matter PLASMA + + + + + + There are FOUR states or phases of matter. 1 2 3 4
  • 19. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net
  • 20. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Molecular structure Network Molecular Ionic Metallic Particles Bonds Structure Properties Example
  • 21. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Hi - This is a SAMPLE presentation only. My FULL presentations, which contain a lot more more slides and other resources, are freely available on my resource sharing website: www.warnescience.net (click on link or logo) Have a look and enjoy! WarneScience

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