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Chemistry > Basic Concepts > Flashcards

Basic Concepts Flashcards

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1
Q

Science

A

Continuing human effort to systematize knowledge for describing and understanding nature

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2
Q

Chemistry

A

Composition,properties and interaction of matter

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3
Q

Acid rain

A

High concentration of oxides of sulphur and nitrogen

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4
Q

Green house gases effect

A

Drought,floods,high wind and storm -methane,carbon dioxide etc

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5
Q

Nitrous oxide

A

Messenger compound in transmission of brain waves and in immune system slow down growth of tumour cells

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6
Q

Chemical fertilisers

A

Urea,ammonium sulphate

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7
Q

Food preservatives

A

Sodium benzoate,sodium metabisulphite

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8
Q

Insecticide and pesticide

A

DDT,gammexane

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9
Q

Air conditioner

A

Liquid ammonia,liquid sulphur dioxide

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10
Q

Cancer drugs

A

Cisplatin,taxol

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11
Q

AZT azidothymidine

A

Drug in AIDS

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12
Q

Material for superconducting ceramics

A

Perovskites

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13
Q

Organic polymers that conduct electricity

A

Conducting polymers

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14
Q

Flexible transparent fibre made of pure glass (silica)not much wider than human hair

A

Optical fibre

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15
Q

CFCchloroflurocarbon

A

Refrigerant responsible for ozone depletion in stratosphere

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16
Q

CFC is replaced by

A

R410A and natural refrigerant like ammonia,carbon dioxide and non halogenated hydrocarbons

17
Q

Ammonia

A

No global warming

18
Q

Carbon dioxide,hydrocarbons

A

Low global warming potential

Chemistry (3 decks)

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