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2.1.5 redox
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Total cards: 6•Content version: v4•Public deck•Updated: 8/1/2026
Card preview (6)
#1
Front (Question)
Oxidation
Back (Answer)
Electron loss Involves an increase in oxidation number Zn > Zn2+ + 2e-
#2
Front (Question)
Reduction
Back (Answer)
electron gain Involves a decrease in oxidation number Cl2 + 2e- > 2Cl-
#3
Front (Question)
Uncombined numbers
Back (Answer)
Oxidation number of 0
#4
Front (Question)
Hydrogen
Back (Answer)
+1 but -1 in NaH
#5
Front (Question)
Oxygen
Back (Answer)
-2 except in peroxides (H2O2) where it is -1 and in compounds with fluorine
#6
Front (Question)
Acid + metal
Back (Answer)
Salt + hydrogen Produces effervesce as H2 gas is evolved and metal dissolves