Redox Reactions Review

An oxidizing agent will always...

• be reduced

• increase in oxidation number

• increase in mass

• lose electrons

In a redox reaction, the species that loses electrons...

• is called the cathode

• is oxidized

• decreases in oxidation number

• gains mass at the electrode

Oxidation-reduction reactions occur because of the competition between particles for...

• protons

• neutrons

• electrons

• positrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

As an element is oxidized, its oxidation number...

• increases as electrons are gained

• decreases as electrons are gained

• decreases as electrons are lost

• increases as electrons are lost

An Oxidation number can be

• zero

• negative

• positive

• All of Above

Oxidation state of any free element is always...

• 0

• 1

• 2

• 3

A chemical reaction that involves a gain/loss of electrons is called:

• Double Replacement
• Neutralization
• Oxidation-Reduction
• Hydrolysis

The sum of all oxidation numbers in a neutral compound is ___.

• 0
• 1
• -1
• depends on the compound

What element's don't have oxidation numbers?

• alkali metals
• noble gases
• halogens
• alkaline earth metals

What is the meaning of reduction?

• Gain of electron

• Gain of oxygen

• Loss of hydrogen

• Increase in oxidation number