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More cards in this set
Card 6
Front
What substance is powdered limestone mixed with to make cement?
Back
Card 7
Front
Ores are mined and may be ______ before metal is extracted and then _____
Back
Card 8
Front
Iron is converted into steel by mixing iron with which element?
Back
Card 9
Front
Copper can be extracted from low-grade ores by what two methods?
Back
Card 10
Front
What is an alloy?
Back
Card 11
Front
Why is pure iron soft and malleable?
Back
Card 12
Front
Why are most metals in everyday use e.g. copper and aluminium, mixed with small amounts of other metals?
Back
Card 13
Front
What is the name of the block of metals in the middle of the periodic table?
Back
Card 14
Front
Which two chemical elements make up most of the molecules in crude oil?
Back
Card 15
Front
What is the name of the process by which crude oil is seperated?
Back
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