Chemistry Cards

These cards are: Chemistry 1a Chemistry 1b

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What Carbon - Carbon Bond do unsaturated oils contain?
Double Bond
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Apart from cooking, name one other use of vegtable oils.
Fuel (Biodiesel)
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Give a typical example of a substance that is cracked.
- Crude Oil
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Name the 5 things that you get from cracking Crude Oil.
Petrol, Naphtha, Kerosene, Diesel and Oil.
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What is "Craking"? And Why is it done?
Craking means splitting up a long chain of Hydrocarbons. And it is used to make plastics.
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What kind of Carbon - Carbon bond to Alkenes have?
Double Bonds
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What is an emulsion? Give an example.
Droplets of liquid suspended in another liquid. Eg Paint, Food and Cosmetics.
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Suggest one problem of adding emulsifiers to food.
Some people are allergic to certain emulsifiers.
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What happens when you react unsaturated oils with Hydrogen?
The oil has a higher melting point so they are more solid at room tempreture.
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When Ethene is hydrated with steam, what substance is formed?
Ethanol
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What is the genral formula for Alkenes?
Cn H2n
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What are Polymers?
The joining together of lots of small Alkene molecules to form very large molecules.
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Plans to develop a lime stone quarry and cement factory on some hils next to you town. Describe the veiws of the following.
Dog owners, Cafe Owner, Mother with young children, Beatle.
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What is the main Alimium ore called?
Bauxite
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How much Nitrogen is in the atmosphere?
78%
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What is the chemical formula for Aluminum Oxide?
Al2 O3
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How much Oxygen is in the atmoshpere?
21%
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How much Argon is in the atmosphere?
0.9%
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How much Carbon Dioxide is in the atmosphere?
0.04%
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What is Calcium Hydroxide used for?
It can be used to neutralise acidic soil in fields.
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Which elements properties are more simular to Magnesiums: Calcium/Iron?
Calcium - Because it is also a reactive metal.
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Give a reson why Aluminum is an expensive metal.
Because the extraction process is expensive.
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What is the genral formula for an Alkane?
Cn H2n
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What is Electrolysis?
Electrolysis is the splitting up of a substance using electricty.
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What products are produced when Limestone reacts with acid?
- Calciun Salt - Carbon Dioxide - Water
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What is the symbol for sodium?
Na
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Write down the symbol equation showing the thermal decomposition of Limestone?
CaCO3 ---> CaO + CO2
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What is the symbol for Carbon?
C
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What is the Symbol for Calcium?
Ca
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Name 3 Building materials made from limestone.
- Mortar - Concreate - Cement
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What is the defaniton of "Ore"?
A metal Ore is a rock which contains enough metal to make it worthwhile extraciting the metal from it.
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What is the name of the meathod where plants are used to extract matals form soil.
Phytomining
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Describe the process of purefying Copper by electrolysis.
Electrons are pulled off Copper atoms at the anode. Causing them to go into the solution. The impurities are dropped at the anode as a sludge.
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List 2 advantages of cooking with oil.
- Increse the energy we get from eating it. - We can cook food faster because it has a higher boiling point.
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Why do some oils need to be distiled after they have been extracted?
Distiation refines oil and removes water, solvents and imourities.
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Why might Polymers becaome more expensive in the future?
The Crude oil will eventually get used up. So polymers will get expensive.
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Name 4 uses of Polymers.
- Lycra - Dental Polymers - Waterproof coatings - Memory foam
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Give 3 good reasons why it is good to recycle.
Reduces: - Global Dimming - Acid Rain - Climate Change
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Expalin why Zinc can be extracted by reduction with Carbon but Magniesium can't.
Because metals that are higher than Carbon in the reactivity series have to be extracted using electrolysis. which is expensive.
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Other cards in this set

Card 2

Front

Apart from cooking, name one other use of vegtable oils.

Back

Fuel (Biodiesel)

Card 3

Front

Give a typical example of a substance that is cracked.

Back

Preview of the front of card 3

Card 4

Front

Name the 5 things that you get from cracking Crude Oil.

Back

Preview of the front of card 4

Card 5

Front

What is "Craking"? And Why is it done?

Back

Preview of the front of card 5
View more cards

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