Mr David is a Chemical Engineer. He has a company in China that collects industrial waste and recycles it into usable resources. He creates 18 different types of metals from waste products.
They even use the dust from steel which is dangerous to the environment. They collect the dust and use it to create further zinc and iron products.
Mr David discussed how every chemical reaction involves energy. This is important in his work.
He said that energy cannot be destroyed, rather just changes form. He also gave examples of all the sources of energy and explained some of the advantages and disadvantages of each.
He also discussed how we need energy to stay alive. Also how we use more energy in our lives today with air conditioning, computers, electrical appliances.
The students thought about the sources of energy and selected three they want to find out more about. They will have the option of working by themselves or in pairs to research, create models and experiments and find out more about their favorite energy forms. They will create explanations and share these with their peers in the coming weeks.
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