Chemistry Ch 20 Content

If an atom is reduced in a redox reaction then

______ is another name for an oxidation-reduction reaction

Electrons are ______ in reduction reaction and ______ in oxidation reactions

Electrons are ______ in an oxidation-reduction reaction

Cu ↣ Cu⁺² + 2e- is a ______ reaction

in 2Na + 2H₂O ⇨ 2NaOH + H_{2 and} 

2Na + S ⇨ Na₂S what is Na

in CH₄+ 2O₂⇨ CO₂+ H₂O
O₂ is what?

the oxidation number of hydrogen when it is in a compound other than hydride is _____.

the oxidation number of bromine in bromine gas is _____.

The oxidation number for each atom in 
NH₄Cl

the charge of an atom would have in a compound if its bonding electrons were assigned to the more electronegative atom

What is Cr's oxidation number in
K₂Cr₂O₇ + H₂O + S ⇨ KOH + Cr₂O₃ + SO₄

In H₂O + Cl₂ + SO₂ ⇨ HCl + H₂SO₄
what is reduced?

In HNO₃ + HBr ⇨ NO + Br₂ + H₂O

what is oxidized?

_______ reactions include many single replacement reactions, combination reactions, decomposition reactions, and combustion reactions

Ionic reactions are best balanced by _____