Identifying Redox Reactions

If in a reaction, copper is reduced; its number of electrons has:

• Increased
• Decreased
• Remained Constant
• Varies Randomly

Tags

NGSS.HS-PS1-2

Is calcium oxidized or reduced in the following reaction? 
2CaO--> 2Ca + O₂

• Oxidized
• Reduced

Tags

NGSS.HS-PS1-2

What element is being Oxidized?

• N⁺⁵

• H⁺¹

• O^-2

• S^-2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What element is being Reduced?

• N⁺⁵

• H⁺¹

• O^-2

• S^-2

Tags

NGSS.HS-PS1-2

What element is being Oxidized?

• I⁰

• H⁺¹

• S⁺⁴

• O^-2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What element is being reduced?

• I⁰

• H⁺¹

• S⁺⁴

• O^-2

Tags

NGSS.HS-PS1-2

If an atom loses electrons during a chemical reaction, the atom was:

• Oxidized
• Reduced
• Neutralized
• Precipitated

Tags

NGSS.HS-PS1-2

In the reaction Zn + H₂O --> ZnO₂ + H₂

which element, if any, is oxidized?

• Zn⁰

• Zn⁺²

• O^-2

• H₂⁰

• None

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What substance is oxidized in the following reaction?
4Fe + 3O₂ --> 2Fe₂O₃

• Iron
• Fluorine
• Oxygen

Tags

NGSS.HS-PS1-2

Cl₂ + 2e- --> 2Cl ^- is an example of:

• a chemical reaction

• redox

• oxidation

• reduction

Tags

NGSS.HS-PS1-2