Oxidation Reduction Chemistry

What is the oxidation state of an atom in a neutral compound?

• +2

• -1

• 0

• +1

What is the oxidation number of oxygen in most cases?

• -2

• +1

• -1

• +2

What is the oxidation state of hydrogen in compounds?

• 0

• +1

• +2

• -1

Tags

NGSS.HS-PS1-1

What is the oxidation state of an element by itself?

• 0

• +1

• +2

• -1

• A

• B

• C

• D

What is the removal of oxygen from a substance called?

• reduction

• extraction

• electrolysis

• oxidation

What is oxidation?

• loss of oxygen

• gain of electrons

• gain of hydrogen

• loss of electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element cannot be extracted from its ore by reduction with carbon?

• iron

• aluminium

• copper

• lead

How would you best extract iron from haematite (iron ore)?

• reduction by carbon

• electrolysis

• decomposition

• oxidation

Name of method iron oxide is reduced using carbon on an industrial scale.

• Fractional distillation

• Cracking

• Blast furnace