Las reacciones redox

Interactive Video
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Science, Chemistry, Physics
•
4th - 9th Grade
•
Hard
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary chemical change involved in extracting metals from their ores?
Reduction
Sublimation
Oxidation
Condensation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What discovery allowed ancient people to extract iron from hematite?
Mixing hematite with water
Using a different type of furnace
Adding air to the coal to increase temperature
Using a higher grade of coal
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In modern blast furnaces, what is the role of carbon monoxide?
It serves as a reducing agent
It oxidizes iron
It acts as a fuel
It cools down the furnace
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a result of the reaction between carbon dioxide and carbon in a blast furnace?
Formation of carbon monoxide
Production of water
Creation of sulfur dioxide
Generation of nitrogen gas
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are redox reactions important in modern metallurgy?
They help in cooling metals
They are used to color metals
They increase the weight of metals
They are used to extract metals less reactive than carbon
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