gcse core chemistry similarities & differences exam tip; you must know both the similarities...
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GCSE Core Chemistry
Exam tip; You must know BOTH the similarities & similarities & differencesdifferences between Aluminium and Titanium
Key words; displacement, oxide layers, recycling
GCSE Core Chemistry
Exam tip; You must know BOTH the similarities & similarities & differencesdifferences between Aluminium and Titanium
Learning Objectives: • That aluminium and titanium are useful metals.• That extracting aluminium and titanium is costly.• Some reasons for recycling aluminium.
I will be successful if I can: • List the useful properties of aluminium and titanium.•Recall the methods of extraction used for aluminium and titanium.• List reasons for the importance of aluminium recycling.• Give examples of uses of aluminium and/or titanium and explain which properties makes them fit for purpose.• Describe why the extraction of aluminium and titanium is costly.• Explain the benefits, in terms of social, economic and environmental benefits of aluminium recycling.
GCSE Core Chemistry
Exam tip; You must know BOTH the similarities & similarities & differencesdifferences between Aluminium and Titanium
UNLUCKY DIP?UNLUCKY DIP?
Take from my bag…If you dare!
Send 1 brave soul to pick Send 1 brave soul to pick something from the bag something from the bag of death. As a group find of death. As a group find as much information as as much information as you can as you will be you can as you will be
describing it to everyone describing it to everyone elseelse
Al and Ti have a lower density than Al and Ti have a lower density than most metals and are resistant tomost metals and are resistant to
corrosion with Titanium being strong corrosion with Titanium being strong at high temperatures.at high temperatures.
Extracting these materials areExtracting these materials areexpensive as it requires electrolysis.expensive as it requires electrolysis.
Recycling saves resources & Recycling saves resources & the energy needed to extract the energy needed to extract
the metal from its ore.the metal from its ore.
GCSE Core Chemistry
Exam tip; You must know BOTH the similarities & similarities & differencesdifferences between Aluminium and Titanium
DEMONSTRATION
Add Aluminium powder into a bunsen flame.
Describe what happens
Write the word equation
Write a balanced chemical equation
Is it magic????
GCSE Core Chemistry
Exam tip; You must know BOTH the similarities & similarities & differencesdifferences between Aluminium and Titanium
Aluminium powder + Oxygen gas (forms) Aluminium oxide
4Al + 3O2 (forms) 2Al2O3
GCSE Core Chemistry
Exam tip; You must know BOTH the similarities & similarities & differencesdifferences between Aluminium and Titanium
coating of oxygen atoms
The outer aluminium atoms react with oxygen in the atmosphere. This forms a thin layer of aluminium oxide on the metal’s surface, which protects the metal from corrosion.
Aluminium is a very reactive metal. However, it does not corrode in the presence of oxygen. Why is this?
oxygen in the atmosphere
aluminium atoms
GCSE Core Chemistry
Exam tip; You must know BOTH the similarities & similarities & differencesdifferences between Aluminium and Titanium
Use p48-51 to 1. Prepare a table listed the similarities & differences
of the 2 metals.2. Link specific properties of Al and Ti to their uses. 3. Consider environmental issues such as recycling
NOTE: We should recycle metals because NOTE: We should recycle metals because extracting them uses limited resources and is extracting them uses limited resources and is expensive in terms of energy and effects on the expensive in terms of energy and effects on the environment for example the multi-stage process environment for example the multi-stage process involved in extracting metals such as titanium. involved in extracting metals such as titanium.
GCSE Core Chemistry
Exam tip; You must know BOTH the similarities & similarities & differencesdifferences between Aluminium and Titanium
Aluminium & Titanium Metal
• Soft with low mp• Can be hardened by
alloying• Extracted by
electrolysis• Used in buildings,
cans, cooking foil, electricity cables, aircraft
• Reacts with C so is extracted by displacement
• Used in jet engines, nuclear reactors, replacement hip joints, bicycles
GCSE Core Chemistry
Exam tip; You must know BOTH the similarities & similarities & differencesdifferences between Aluminium and Titanium
I went down to the shop today I went down to the shop today andand
I bought…I bought…
Homework sheet:
Using Metals
GCSE Core Chemistry
Exam tip; You must know BOTH the similarities & similarities & differencesdifferences between Aluminium and Titanium
Learning Objectives: • That aluminium and titanium are useful metals.• That extracting aluminium and titanium is costly.• Some reasons for recycling aluminium.
I will be successful if I can: • List the useful properties of aluminium and titanium.•Recall the methods of extraction used for aluminium and titanium.• List reasons for the importance of aluminium recycling.• Give examples of uses of aluminium and/or titanium and explain which properties makes them fit for purpose.• Describe why the extraction of aluminium and titanium is costly.• Explain the benefits, in terms of social, economic and environmental benefits of aluminium recycling.
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