Chemistry of smartphones (TedEd)

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Rare earth elements and pecious metals

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Krisztina Győrössy

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Froggy Jumps Chemistry of smartphones (TedEd)Versión en línea Rare earth elements and pecious metals por Krisztina Győrössy 1 Approximately how many chemical elements are found in a smartphone? a 25 b 55 c 70 2 Which one is NOT a characteristic of a rare earth element? a They are found in huge amounts b They are relatively common in Earth’s crust. c There are about 17 different ones 3 How might smartphones be linked to climate change? a They produce carbon dioxide b They have components that use oil in their production c They produce heat during their use 4 What was the predicted number of smartphones that would be in use in 2019? a 3 billion b 2.3 billion c 7.3 billion 5 Which one is NOT a precious metal? a copper b silver c argon 6 What is a disadvantage of "open pit mining"? a destruction of natural habitats b only some metals can be excavated c it costs a lot of money 7 Which elements can permanently damage your nervous system? a cobalt and nickel b iron and iodine (jód) c mercury and lead (ólom) 8 What are the 'functions' of rare earth elements in smartphones? a holding the device altogether b creating screen and colour display c to replace petroleum

Froggy Jumps

Chemistry of smartphones (TedEd)Versión en línea

Rare earth elements and pecious metals

por Krisztina Győrössy

Approximately how many chemical elements are found in a smartphone?

Which one is NOT a characteristic of a rare earth element?

They are found in huge amounts

They are relatively common in Earth’s crust.

There are about 17 different ones

How might smartphones be linked to climate change?

They produce carbon dioxide

They have components that use oil in their production

They produce heat during their use

What was the predicted number of smartphones that would be in use in 2019?

3 billion

2.3 billion

7.3 billion

Which one is NOT a precious metal?

copper

silver

argon

What is a disadvantage of "open pit mining"?

destruction of natural habitats

only some metals can be excavated

it costs a lot of money

Which elements can permanently damage your nervous system?

cobalt and nickel

iron and iodine (jód)

mercury and lead (ólom)

What are the 'functions' of rare earth elements in smartphones?

holding the device altogether

creating screen and colour display

to replace petroleum

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Chemistry of smartphones (TedEd)

Froggy Jumps

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Chemistry of smartphones (TedEd)Versión en línea

por Krisztina Győrössy

Approximately how many chemical elements are found in a smartphone?

Which one is NOT a characteristic of a rare earth element?

How might smartphones be linked to climate change?

What was the predicted number of smartphones that would be in use in 2019?

Which one is NOT a precious metal?

What is a disadvantage of "open pit mining"?

Which elements can permanently damage your nervous system?

What are the 'functions' of rare earth elements in smartphones?

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