Post on 29-Dec-2015
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WRITING CHEMICAL WRITING CHEMICAL PRESENTATIONSPRESENTATIONS
INTRODUCTION
WRITING AND CREATING A POWERPOINT VERSION
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WritingWriting
Writing depends on aim of presentation:
Writing
Research-based.Write like researchpaper, analyticalstyle
Non-research-based(topic based). Writein analytical orargumentative style
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WritingWriting
Research-based. Plan and write as for a research paper:• Title• Summary of contents (in place of
abstract)• Introduction (with posed questions)• Methods• Results and Discussion• Conclusions, acknowledgements, etc
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WritingWriting
Non-research- or topic-based. Can be written in analytical or argumentative style:• Analytical: write as a sequence of interrelated sub-topics• Argumentative: write as a critical assessment of theory or current ideasregarding the topic
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WritingWriting
Carry out the following steps:1. Choose a subject and plan content2. Write3. Decide on illustrations for PowerPoint
presentation (figures and tables)4. Create the PowerPoint slides of these5. Create the remainder of the PowerPoint
slides (title, content or outline, supporting slides, conclusions, acknowledgements, etc)
6. Control number of slides for your needs
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PowerPoint as a Presentation AidPowerPoint as a Presentation Aid
• In a presentation, PowerPoint is a visual aid, and as such, is best for illustration, rather than text.Used the right way, it can improve
1. Effectiveness of presentation
2. Audience perception
3. Speaker confidence
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Strengths and Weaknesses of Strengths and Weaknesses of PowerPoint PowerPoint
• Good for visual information (figures, charts, schemes, structures, tables, etc)
• Not so good for text
• Not good for spontaneous discussion
• Can replace structure of presentation rather than support it
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Creating PowerPoint SlidesCreating PowerPoint Slides
First steps. Decide:• Number of slides. Depends on
duration of presentation and audience experience
• Extent of background and depth needed. Depends largely on audience
• Organization of slides per section of presentation
• Individual slide design. See next
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Creating PowerPoint SlidesCreating PowerPoint Slides
Design: text slides (general)
• Use minimum of text – stick to ~6 lines with ~6 words per line
• Avoid full sentences
• Highlight key words
• Do not put too many ideas on one slide
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Creating PowerPoint SlidesCreating PowerPoint Slides
Design: text slides (fonts and formats)
• Use clear fonts – preferably sans serif types, like Arial or Helvetica
• Use 28-32 pt fonts in general (smaller fonts occasionally)
• Use simple formats, but if complex, ensure it is elegant
• Don’t overdo animation
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Creating PowerPoint SlidesCreating PowerPoint Slides
Design: text slides (colors)
• Dark letters on a white or pale (e.g. cream or grey) background are fine
• Color variation within a slide is not necessary, but can be done. In which case watch color match
• Use plain background, rather than gradation background
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Creating PowerPoint SlidesCreating PowerPoint Slides
Design: text slides (colors)
• Light letters on a dark background is fine
• Color variation can be used
• Be careful of color matches (see next)
• This style is thought best for large audiences
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Creating PowerPoint SlidesCreating PowerPoint Slides
Design: text slides (colors)
• In dark letter/light background slides, avoid pale letters
• In light letter/dark background slides, avoid red-green combinations (see example, next)
• Be sensitive to weaknesses of other color combinations
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How Reactions Take PlaceHow Reactions Take Place
Chemical reactions are due to the collisions of molecules.
Some collisions result in bonds being broken.
Some of the fragments can reform into other molecules.
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How Reactions Take Place
• Chemical reactions are due to the collisions of molecules.
• Some collisions result in bonds being broken.
• Some of the fragments can reform into other molecules.
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How Reactions Take Place
• Chemical reactions are due to the collisions of molecules.
• Some collisions result in bonds being broken.
• Some of the fragments can reform into other molecules.
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How Reactions Take PlaceHow Reactions Take Place
• Chemical reactions are due to the Chemical reactions are due to the collisions of molecules.collisions of molecules.
• Some collisions result in bonds being Some collisions result in bonds being broken.broken.
• Some of the fragments can reform into Some of the fragments can reform into other molecules.other molecules.
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How Reactions Take PlaceHow Reactions Take Place
• Chemical reactions are due to the collisions of molecules.
• Some collisions result in bonds being broken.
• Some of the fragments can reform into other molecules.
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How Reactions Take PlaceHow Reactions Take Place
• Chemical reactions are due to the collisions Chemical reactions are due to the collisions of molecules.of molecules.
• Some collisions result in bonds being Some collisions result in bonds being broken.broken.
• Some of the fragments can reform into Some of the fragments can reform into other molecules.other molecules.
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How Reactions Take PlaceHow Reactions Take Place
• Chemical reactions are due to the collisions of molecules.
• Some collisions result in bonds being broken.
• Some of the fragments can reform into other molecules.
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Creating PowerPoint SlidesCreating PowerPoint Slides
Design: illustrative slides (figures, equations, etc)• Keep as simple as possible• Think large. Details that are too small
won’t be seen• Use minimum number of labels• Use PowerPoint to draw - or import
from Excel, OriginPlus, ChemDraw, etc
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Creating PowerPoint SlidesCreating PowerPoint Slides
Design: illustrative slides (figures,
equations, etc)
• Simplify imported figures to fit ppt slide, if necessary
• Likewise condense or simplify imported tables
• Fill in verbally any footnotes or labels missing from figures or tables
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Avoid Designs like Next Slide?Avoid Designs like Next Slide?
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Fig. 6.11 Bond angles and Geometries
• A lone pair of electrons is intrinsically more repulsive than a bonding pair, since no bonded atom draws electron density away from the atom.
• The bond angles, HXH, of CH4, NH3, OH2 decrease 109°, 107.5°, 104.5°.
Axial(ax)
Equatorial(eq)
Note geometry of trigonalbipyrimidal arrangement andnote preferrential placingof lone pairs in equatorialpositions
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Examples of Acceptable Examples of Acceptable Illustrative SlidesIllustrative Slides
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Rate profiles for hydrolysis of 2 and 3
in sulfuric acid at 44.8 oC
2.0 4.0 6.0 8.0 10.0 12.0[H2SO4]/M
104k1/s-1
700
600
500
400
300
200
100
00
3
2
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At Pt cathode (-ve) 4e- + O2 + 4H+ 2H2O
At Ag anode (+ve) 4Ag + 4Cl- 4AgCl + 4e-
4Ag + 4Cl- + 4H+ + O2 4AgCl + 2H2O
"O" ring
Permeable membrane
Ag anode
Pt cathode
Saturatedaq. KCl
Applied potential(~0.6 V)
Clarke Oxygen Electrode
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NN
O
ONH
Br
COOH
H2N COOtBuHCl5 steps
52%
HN
N S
COOtBu IBr, CH2Cl2
78 oC95%
NN
COOtBuI
SH2O, MeNO2
2. H2S, Py, Et3N60%
1. CF3COOAg
NHN
COOtBuHO
S
2. 4N HCl75%
1. urea H2O2
MeOH NN
COOHHO
1 step
70% 11
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( )-manzacidin±
Outline of ()-manzacidin synthesis
(1) Drouin, C.; Woo, J. C. S.; Mackay, D. B.; Lavigne, R. M. A. Tetrahedron Lett. 2004, 45, 7197
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Packing of N-phenyladamantane-1-sulfinamide, showing hydrogen bonding
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Country Unit of alcohol (g ethanol)
Daily maximum drinks (units) Australia 10 2 (M), 2 (F)
Austria 6 4 (M), 2.67 (F)
Canada 13.6 2 (M), 2 (F)
Japan 19.75 1-2
UK 8 4 (M), 3 (F)
USA 14 2 (M), 1 (F)
Units of alcohol from around the world
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Carbon dioxide headspace pressure (atm) as a function of solution concentration (v:v) and temperature.
Temp/oC
Vol CO2
1.4 1.8 2.0 2.5 3.0
4
-
0.25
0.45
0.81
1.17
6 0.08 0.38 0.61 0.96 1.34
10 0.25 0.61 0.81 1.34 1.73
12 0.33 0.67 0.93 1.40 1.96