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Chemistry
Chemical changes
Separating metals from metal oxides
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Created by
Chloe Smith
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Cards (22)
What is the process of gaining oxygen called?
Oxidation
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What happens when magnesium combines with oxygen?
It forms
magnesium oxide
through
oxidation
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What does reduction refer to in chemical terms?
Loss of
oxygen
from a compound
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What is produced when magnesium oxide is reduced?
Magnesium and
oxygen
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Why do most metals oxidize when exposed to oxygen?
Because they are fairly
reactive
with oxygen
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What is iron oxide commonly known as?
Rust
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Why do unreactive metals like gold remain pure?
They are too unreactive to
oxidize
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What is the most common bonding element for metals?
Oxygen
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How can we remove oxygen from metal oxides?
By
reducing
them to get pure metals
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What is the cheapest way to reduce metal oxides?
Using
carbon
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What does carbon do in the reduction of metal oxides?
It takes oxygen to form
carbon dioxide
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What is produced when copper oxide reacts with carbon?
Copper and
carbon dioxide
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Why can't we use carbon to extract all metals?
Only less
reactive
metals can be
reduced
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What is the process called for extracting more reactive metals?
Electrolysis
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What is a common ore of iron?
Fe
2
_2
2
O
3
_3
3
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How do we isolate pure iron from iron oxide?
By reducing Fe
2
_2
2
O
3
_3
3
with
carbon
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What is the balanced equation for reducing Fe
2
_2
2
O
3
_3
3
with carbon?
Fe
2
_2
2
O
3
_3
3
+ C → Fe + CO
2
_2
2
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What do we need to supply to reduce iron oxide?
Heat
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What happens to carbon during the reduction of metal oxides?
Carbon is
oxidized
as it gains oxygen
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What should you do if you found the video helpful?
Like
and subscribe
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What are the key concepts of oxidation and reduction?
Oxidation:
gaining
oxygen
Reduction:
losing
oxygen
Metals oxidize when
reactive
with oxygen
Unreactive
metals remain pure
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What is the process of extracting metals from their oxides?
Identify metal oxide
Use
carbon
for reduction if less reactive
Apply heat to facilitate reaction
Collect pure metal and
carbon dioxide
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