Done by Al-Hazm group from Hassan Bin Thabet school. Under supervision from AL-Bairaq

1. IamDiscoveringMaterials13
assanbinThabitschool
AhmedTamer Abdulrahman Kahora
Nasser Hamad Nasser Ali
Al Hazm

2. Outline
introduction
• Activity 1:Comparing Packing Materials
• Activity 2:Hunting for Biodegradable Materials
• Activity 3: Processing biodegradable materials and comparing their
mechanical properties
• Activity 4: Measuring the Degradation Rate of Biodegradable Martials
• Activity 5:Designing a Medicine Delivery Device
• Product Idea

3. Are materials capable of being broken down
(decomposed) rapidly by the action of microorganisms.
Biodegradable substances include food scraps, cotton,
wool, wood, human and animal waste, manufactured
products based on natural materials (such as paper, and
vegetable-oil based soaps).

4. Biodegradable Starch Non-Biodegradable Polystyrene

5. Packing materials
Behavior in
water
Protection
Effectiveness
Biodegradable Degrades Effective but
not suitable
for liquids
Non
Biodegradable
Doesn’t Degrade Effective
Results :-
Conclusions :-

6. Objects that should be
biodegradable
Reasons Objects that should not be
biodegradable
Reasons
Plastic Bags Save the space in the
landfills and save the
environment from the
production of toxic
materials
Houses It is desirable to
save the
durability of
theses items in
the presence of
different
enviromental
conditions.
Some types of food
packiging materials
Cars
Plates, Spoons, Forks…
Etc
Electronic devices

8. Concentration of
gelatin solution
Mass of capsules used
to make solution(g)
Mass of processed material
(g)
Observations
5 % 0.5 Transparent
10 % 1 Inbetween
20 % 2 LessTransparent
but stronger

10. Material
HCl
PH 4
NaOH
PH 10
Hot water
̴ 100 ℃
Room
temperature
water
Time (min.)
Gelatin
capsule
Foam
5% film
10% film
20% gel

12. Acidic Rain Indicator (ARI)
•