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Atomic Structure
Atomic Structure
Atomic Structure
Atomic Structure
Atomic Structure
Atomic Structure
Atomic Structure
Atomic Structure
Atomic Structure
Atomic Structure
Atomic Structure
Atomic Structure
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Atomic Structure

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A set of slides created to teach Atomic Structure to learners at Bishops Diocesan College in Cape Town.

A set of slides created to teach Atomic Structure to learners at Bishops Diocesan College in Cape Town.

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  • 1. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Balancing Reactions K Warne
  • 2. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Balancing Reactions
  • 3. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Reactions O O
  • 4. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Reaction Equations O H2O O H2O O O + TWO molecules of Hydrogen gas and One MOLECULE of Oxygen gas REACT to form Two MOLECULES of water H2 H2 O2 2H2 + O2  2H2O
  • 5. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Balanced reaction H2 + F2  2HF Balancing Reactions H H F F H F Unbalanced reaction H2 + F2  HF ? H H F F H F H F
  • 6. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Conservation of Mass 1. Butane reacts with oxygen 1 2 Reactants Substance O C H No. oxygen 26 0 0 26 butane 0 8 20 28 TOTAL 26 8 20 54 2. Carbon dioxide and water are formed Products Substance O C H No. Carbon dioxide 16 8 0 24 Water 10 0 20 30 TOTAL 26 8 20 54 butane The principle of the conservation of matter and mass is demonstrated in this example – the total number of atoms remains CONSTANT NO MASS IS LOST!
  • 7. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net REACTIONS 1. __________ reacts with ________ 2. ___________ and ______ are formed Butane + Oxygen  Carbon dioxide + water C4H10 + ___O2  __CO2 + __H2O 1 2 Reaction equation
  • 8. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Tips for Balancing Equations • Balance in the order: Metals, Non-metals, oxygen then hydrogen. • Always leave the element on its own (not bonded) to last. • Check all formulae are correct if a reaction won’t balance. • You can ONLY balance by changing coefficients. (Big numbers in front.)
  • 9. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Balancing Reactions 1. Na + Cl2 --> NaCl 2. C + Cl2 --> CCl4 3. ZnS + O2 --> ZnO + SO2 4. FeS + HCl --> H2S + FeCl2 5. SO2 + H2S --> S + H2O
  • 10. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Balancing More Reactions 1. Na + H2O --> NaOH + H2 2. H2 + O2 --> H2O 3. CaCO3 --> CaO + CO2 4. CaCl2 + Na2SO4 --> CaSO4 + NaCl 5. AlNO3 + K2CO3 --> Al2(CO3)3 + KNO3 6. Na3PO4 + MgI2 --> Mg3(PO4)2 + NaI
  • 11. SAMPLE ONLY SAMPLE ONLY SAMPLE ONLY For FULL presentation click HERE >> www.warnescience.net Molecules O2 a 3CH4 b CO2 c H2S CH4 + O2 ---> CO2 + H2O Methane + oxygen --> water + carbon dioxide
  • 12. 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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