Reduction and Oxidation in Chemistry

What does "GER" stand for in the context of oxidation and reduction?

• Gain Electrons = Reduction

• Gain Energy = Reduction

• Lose Electrons = Reduction

• Lose Energy = Reduction

Tags

NGSS.HS-PS1-2

What is the oxidation number of atoms in a neutral substance that contains atoms of only one element?

• 0

• +1

• -1

• +2

What is the oxidation number of oxygen in all compounds?

• -2

• 0

• +1

• +2

In the compound P₂O₅, what is the total oxidation number contributed by oxygen?

• -10

• 0

• +5

• -5

What is the oxidation number of Group IIA elements?

• +2

• +1

• 0

• -1

In the compound K3PO4, how many potassium atoms are there?

• 3

• 1

• 4

• 2

In a covalent bond, what does oxidation involve?

• Shift of electrons towards an atom

• Shift of electrons away from an atom

• Complete gain of electrons

• No change in electron position

What is the oxidation number change for sodium (Na) in the reaction 2Na + Br₂ → 2NaBr?

• 0 to +1

• +1 to 0

• 0 to -1

• -1 to 0

In the context of oxidation numbers, what does the term "oxidized" mean?

• The atom has lost electrons.

• The atom has gained electrons.

• The atom has lost protons.

• The atom has gained protons.

What is the oxidation state of iron (Fe) in the products?

• 0

• +2

• +3

• -2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2