Lesson Worksheet: Redox Reactions Chemistry

In this worksheet, we will practice identifying redox reactions and writing ionic equations to describe electron transfer between oxidants and reductants.

Question 1

Which of the following is a substrate that is oxidized?

  • ACationic species
  • BAnionic species
  • CNeutral species
  • DReducing agent
  • EOxidizing agent

Question 2

What is the process of losing an electron called?

  • AOxidation
  • BTransference
  • CSublimation
  • DNeutralization
  • EReduction

Question 3

What is the process of gaining an electron called?

  • AOxidation
  • BNeutralization
  • CTransference
  • DReduction
  • ESublimation

Question 4

Which of the following is a substrate that is reduced?

  • AReducing agent
  • BCationic species
  • CAnionic species
  • DOxidizing agent
  • ENeutral species

Question 5

Which of the following is not an oxidation–reduction reaction?

  • A2NO+HOHNO+HNO2232
  • B3BrFBrF+Br32
  • C2HCOCO+HCO33223
  • D2HO2HO+O2222
  • E4HPO3HPO+PH33343

Question 6

A piece of magnesium oxide is heated with hydrogen until the magnesium is recovered. Is the magnesium oxide being oxidized or reduced?

  • AReduced
  • BOxidized

Question 7

When a piece of magnesium oxide is heated with hydrogen, magnesium metal is produced. Is the hydrogen oxidized or reduced?

  • AReduced
  • BOxidized

Question 8

Cesium can be produced by reacting calcium with cesium chloride according to the following equation: Ca+2CsClCaCl+2Cs2

Which element is being reduced?

  • ACs
  • BCaCl2
  • CCa
  • DCsCl

Which element is being oxidized?

  • ACa
  • BCsCl
  • CCs
  • DCaCl2

Question 9

A piece of magnesium left in air is gradually converted to magnesium oxide. Is this reaction an example of oxidation or reduction?

  • AReduction
  • BOxidation

Question 10

Consider the equation shown.

Which arrow shows reduction?

  • AB
  • BA

Which arrow involves the loss of electrons?

  • AB
  • BA

Which arrow involves the gain of electrons?

  • AA
  • BB

This lesson includes 16 additional questions and 16 additional question variations for subscribers.

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