5.3 TRANSITION METALS

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

State the two types of precipitation reactions transition metals can undergo

Back (Answer)

1) Sodium hydroxide + transition metal 2) Ammonia + transition metal

Front (Question)

State the colour of Cu2+ / Copper solution

Back (Answer)

• Blue

Front (Question)

State the colour of Fe2+ / Iron(II) solution

Back (Answer)

• Green

Front (Question)

State the colour of Fe3+ / Iron(III) solution

Back (Answer)

• Yellow

Front (Question)

State the colour of Mn2+ / Manganese solution

Back (Answer)

• Pink

Front (Question)

State the colour of Co2+ / Cobalt solution

Back (Answer)

• Pink

Front (Question)

State the colour of Cr3+ / Chronium solution

Back (Answer)

• Green

Front (Question)

State the observation of Cu2+ with dropwise then excess aqueous NaOH/ Sodium hydroxide

Back (Answer)

• Blue precipitate forms • no change with excess NaOH

Front (Question)

State the observation of Fe2+ with dropwise then excess aqueous NaOH/ Sodium hydroxide

Back (Answer)

• Green precipitate forms • No change with excess NaOH

#10

Front (Question)

State the observation of Fe3+ with dropwise then excess aqueous NaOH/ Sodium hydroxide

Back (Answer)

• Brown precipitate forms • No change with excess NaOH

#11

Front (Question)

State the observation of Mn2+ with dropwise then excess aqueous NaOH/ Sodium hydroxide

Back (Answer)

• Brown precipitate forms • No change with excess NaOH

#12

Front (Question)

State the observation of Co2+ with dropwise then excess aqueous NaOH/ Sodium hydroxide

Back (Answer)

• Blue precipitate forms • No change with excess NaOH

#13

Front (Question)

State the observation of Cr3+ with dropwise then excess aqueous NaOH/ Sodium hydroxide

Back (Answer)

• Green precipitate forms • Precipitate dissolves in excess NaOH

#14

Front (Question)

State the observation of Cu2+ with dropwise then excess aqueous NH3/Ammonia

Back (Answer)

• Blue precipitate forms • Deep blue solution forms with excess NH3

#15

Front (Question)

State the observation of Fe2+ with dropwise then excess aqueous NH3/Ammonia

Back (Answer)

• Green precipitate forms • No change with excess NH3

#16

Front (Question)

State the observation of Fe3+ with dropwise then excess aqueous NH3/Ammonia

Back (Answer)

• Brown precipitate forms • No change with excess NH3

#17

Front (Question)

State the observation of Mn2+ with dropwise then excess aqueous NH3/Ammonia

Back (Answer)

• Brown precipitate forms • No change with excess NH3

#18

Front (Question)

State the observation of Co2+ with dropwise then excess aqueous NH3/Ammonia

Back (Answer)

• Blue precipitate forms • No change with excess NH3

#19

Front (Question)

State the observation of Cr3+ with dropwise then excess aqueous NH3/Ammonia

Back (Answer)

• Green precipitate forms • Purple solution forms with excess NH3

#20

Front (Question)

Define transition element

Back (Answer)

• A d-block element that has an incomplete d-sub-shell when a stable ion

#21

Front (Question)

State the two elements are not classed as a transition element/metal

Back (Answer)

• Zinc Zn2+ • Scandium Sc3+

#22

Front (Question)

State the electron configuration to explain why scandium 3+ is not a transition element/metal

Back (Answer)

• Scandium’s d-orbital is empty

#23

Front (Question)

State the electron configuration to explain why zinc 2+ is not a transition element/metal

Back (Answer)

• Zinc’s d-orbital is full/complete

#24

Front (Question)

Give two examples of transition metals as catalysts

Back (Answer)

1) MnO2 catalyses the decompostion of H202 2) Cu2+ catalyses the reaction of Zn with acids