create a quick slide presentation describing the cracking of long-chain hydrocarbons and the properties of alkenes
use the structural and displayed formulae of alkenes in describing its reactions with hydrogen, steam, and halogens
recognise the reason of cracking long-chain hydrocarbons into smaller and useful chains
Our Learning Goals
Slide 2 - Tekstslide
Chemistry of Alkenes
Organic Chemistry
06 March 2024
Slide 3 - Tekstslide
What are alkenes?
unsaturated hydrocarbons
contain at least one carbon-carbon double bond (C=C)
form the homologous series
general formula: CnH2n
Slide 4 - Tekstslide
Physical Properties of Alkenes
similar to that of alkanes
can exhibit isomerism
Slide 5 - Tekstslide
Reactivity of Alkenes
more reactive because they are unsaturated
C=C bond contains a σ bond and a π bond
Slide 6 - Tekstslide
Chemistry of Alkenes
Organic Chemistry
06 March 2024
Slide 7 - Tekstslide
Goal and Expected Output: Given your tasks, your team must create a reaction poster about alkenes.
Standards : organisation, content, delivery, response to question
Collaborative Activity
timer
20:00
Slide 8 - Tekstslide
Team 1 - Catalytic cracking
Team 2 - Combustion of alkenes
Team 3 - Bromination (Ethene + Ethanolic Br2)
Team 4 - Bromination (Ethene + Aqueous Br2)
Team 5 - Hydrogenation
Team 6 - Catalytic addition of steam
REACTIONS
Slide 9 - Tekstslide
Prac 2.4 - Types of chemical reactions
Topic 6. Chemical Energetics
04 March 2024
Slide 10 - Tekstslide
Standing up while performing any reactions involving heating.
Be careful when heating the magnesium - do not look directly at the flame.
Wear eye protection throughout.
Silver nitrate solution is a moderate hazardand harmful to the aquatic environment. Waste from experiments using silver nitrate must not be poured down the drain.
Copper (II) sulfate is a moderate hazard and harmful to the aquatic environment. Waste from experiments using copper (II) sulfate must not be poured down the drain.
Copper (II) carbonate is harmful if swallowed, an irritant, and harmful to the aquatic environment. Waster from experiments using copper (II) carbonate must not be poured down the drain.
SAFETY ⚠️
Slide 11 - Tekstslide
Materials Checklist
Slide 12 - Tekstslide
Which among the 5 experiments does not show a chemical change?
Experimental Question
Slide 13 - Tekstslide
Write your team hypothesis or prediction.
Hypothesis
Slide 14 - Tekstslide
Prac 2.4 - Types of chemical reactions
Topic 6. Chemical Energetics
04 March 2024
Slide 15 - Tekstslide
Follow the steps on pages 71 and 72 of your practical workbook.
Experiment Proper
Slide 16 - Tekstslide
Standing up while performing any reactions involving heating.
Be careful when heating the magnesium - do not look directly at the flame.
Wear eye protection throughout.
Silver nitrate solution is a moderate hazardand harmful to the aquatic environment. Waste from experiments using silver nitrate must not be poured down the drain.
Copper (II) sulfate is a moderate hazard and harmful to the aquatic environment. Waste from experiments using copper (II) sulfate must not be poured down the drain.
Copper (II) carbonate is harmful if swallowed, an irritant, and harmful to the aquatic environment. Waster from experiments using copper (II) carbonate must not be poured down the drain.
SAFETY ⚠️
Slide 17 - Tekstslide
Wash the materials you used.
Clean your table.
Return the washed/ cleaned materials.
Clean-up
timer
7:00
Slide 18 - Tekstslide
Prac 2.4 - Types of chemical reactions
Topic 6. Chemical Energetics
04 March 2024
Slide 19 - Tekstslide
Share the results of your experiment.
What similarities and differences have you noticed?
