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WorksheetsCCA 16.2 Assessment: REDOX Applications
Total questions: 17
Worksheet time: 48mins
A blast furnace uses a redox reaction to make what?
oxidation chemicals
photographic chemicals
iron
silver
What is another name for the photographic films that were chemically developed to produce photographs?
false positives
mimeographs
bas-relief tablets
silver halides
Why do we refer to the utensils that we eat with as "silverware," even though they are mode from stainless steel?
they are oxidized iron
steel was made shiny like silver
they were made from silver in years past
no one knows
When silver tarnishes, it turns what color?
black
white
blue
yellow
What do fireflies and glow sticks have in common?
phototropism
chemiluminescence
illuminotherapy
ultraviolet wavelengths
The three substances added to the top of a blast furnace are iron ore, limestone, and ...
carbon monoxide
carbon dioxide
coke
oxygen
The tarnish that forms on silver utensils is caused by .
oxygen
moisture in the air
hydrogen sulfide
contact with another metal
Why is aluminum such a great metal for putting beverages in?
It oxidizes very easily and consistently
it is very resistant to oxidiation
it makes drinks taste better
it is cheaper than steel or tin
Why are vitamins C and E added as antioxidants in some foods?
to make reduction occur instead
to make them more healthy
to prevent them from changing color
to make it smell like citrus
When silver tarnishes, what is oxidized?
Ag
O2
silver in Ag2S
oxygen in H2O
When silver tarnishes, what is reduced?
Ag
O2
silver in Ag2S
oxygen in H2O
When aluminum changes to aluminum oxide, what is the oxidizing agent?
Al
O2
Al in Al2O3
O in Al2O3
When aluminum changes to aluminum oxide, what is the reducing agent?
Al
O2
Al in Al2O3
O in Al2O3
In the manufacture of iron from iron ore, what is the role of the carbon monoxide in the reaction? choose all that apply
the carbon is the oxidizing agent
the carbon is the reducing agent
the carbon is oxidized
the carbon is the reduced
(OCl)-1 is the hypochlorite polyatomic ion that is active in bleach and swimming pool chlorination. Which part of the (OCl)-1 ion is reduced?
O
Cl
It isn't, the stain is reduced
this is nonsense
What is the reducing agent (aka reducer)?
Ag+1
Br-1
Ag
Br2
What is the oxidizing agent (aka oxidizer)?
Ag+1
Br-1
Ag
Br2
