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How is glass made?

Completar frases

(2)
Use the verbs in the correct form to complete the text (present and past).

Descarga la versión para jugar en papel

Foreign Language 11º - Secundaria passive voice Edad recomendada: 15 años
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Diana Fúneme
Diana Fúneme
Colombia

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How is glass made?

Use the verbs in the correct form to complete the text (present and past).

Diana Fúneme
1

referred mixed cooled heated added heated turned is made called

How is glass made ?
COOL TURN HEAT MAKE REFFER

Glass is 1 from liquid sand . Ordinary sand is 2 at a temperature of 1700 °C . After it is molten and 3 it gains a different structure . But it doesn't matter how much you cool the sand , it is never 4 into a solid . Instead , it becomes a kind of frozen liquid 5 by scientists as amorphous solid .

MIX BE HEAT

In a commercial glass plant , sand 6 7 with waste glass ( from recycling collections ) , soda ash ( sodium carbonate ) , and limestone ( calcium carbonate ) and 8 in a furnace .

CALL ADD

The soda reduces the sand's melting point , which helps to save energy during manufacture , but it has an unfortunate drawback : it produces a kind of glass that would dissolve in water ! The limestone is 9 to stop that happening . The end - product is 10 soda - lime - silica glass . It's the ordinary glass we can see all around us .