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13 Cards in this Set
- Front
- Back
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what is an alloy? |
a metal made by combining two or more metallic elements |
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The elements in the central block of the periodictable are known as
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transition metals
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properties of transition metals |
they are good conductors of heat andelectricity and can be bent or hammered intoshape. They are useful as structural materialsand for making things that must allow heat orelectricity to pass through them easily
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what is crude oil |
a mixture of a very large numberof compounds
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what is the other name for saturatedhydrocarbons
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alkanes |
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what is the formula for alkanes |
CnH2n+2
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what does sulfur dioxide and oxides of nitrogen cause |
causes acid rain
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what does carbon dioxide cause |
causes global warming,
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give an examples of biodiesel |
biodiesel and ethanol
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how are hydrocarbons cracked |
The vapours areeither passed over a hot catalyst or mixed with steamand heated to a very high temperature so that thermaldecomposition reactions then occur
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Alkenes have the general formula what is it
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CnH2n
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what are polymers |
monomers also known alkenes join together to form larger molecules |
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two ways ethanol produced |
a) can be produced by hydration of ethenewith steam in the presence of a catalyst.
b) can also be produced by fermentation withyeast, using renewable resources. This can berepresented by:sugar >carbon dioxide + ethanol |
