Quest Redox (12.01.2020)

Question 1

in an ____ reaction, one reactant loses electrons and another reactant gains electrons. Electrons are transfered from one reactant to another.

Answer 1

oxidation-reduction

Question 2

oxidation is a __

Answer 2

loss of electrons

Question 3

reduction is a ___

Answer 3

gain of electrons

Question 4

an oxidation number for the more electronegative atom is __

Answer 4

negative

Question 5

The sum of the oxidation numbers in a molecule is equal to __, or for a polyatomic ion, to ____

Answer 5

zero; its charge

Question 6

the oxidation number of an element is ___

Answer 6

zero

Question 7

the oxidation number of a monatomic is equal to ___

Answer 7

its charge

Question 8

in compounds, the oxidation number of group 1A elements is ___ and of group 2A elements is ___

Answer 8

+1, +2

Question 9

in compounds, the oxidation number of fluorine is always __. other elements in group 7A also are this except when combined with oxygen or fluorine

Answer 9

-1

Question 10

in compounds with nonmetals, the oxidation number of hydrogen is ___

Answer 10

+1

Question 11

in compounds with metals, the oxidation number of hydrogen is ___

Answer 11

-1

Question 12

____ agent provides electrons when oxidized

Answer 12

reducing agent

Question 13

___ agent accepts electrons when reduced

Answer 13

oxidizing