Transition Metals Flashcards
What are transition elements?
Metals and have typical metallic properties
What are copper and iron?
Transition metals
Describe thermal decomposition?
A,reaction which a substance is broken down into at least two substances by heat
Test for carbon dioxide
Turns limewater milky
Describe precipitation?
As a reaction between solutions that makes an insoluble solid
Recall that compounds of transitions elements are often coloured:
- copper compounds are often blue
- iron (III) compounds are often light green
- iron (III) compounds are often orange/brown
Recall that transition elements and their compounds are often used as catalysts
- iron in the haber process
- nickel in the manufacture of margarine
Describe the use of sodium hydroxide solution in identify the presence of transition metal ions in solution
- Cu²⁺ gives a blue solid
- Fe²⁺ gives a grey/green solid
- Fe³⁺ gives an orange/brown solids
- the solids are called precipitates
Construct the balanced symbol equation for the thermal decomposition of FeCO₃
FeCO₃ → FeO + CO₂
Construct the balanced symbol equation for the thermal decomposition of CuCO₃
CuCO₃ →CuO +CO ₂
Construct the balanced symbol equation for the thermal decomposition of MnCO₃
MnCO₃ → MnO+ CO₂
Construct the balanced symbol equation for the thermal decomposition of ZnCO₃
ZnCO₃ → ZnO+CO₂
Construct balanced symbol equation for the reaction between Cu²⁺
Cu²⁺ +2OH⁻ →Cu(OH)₂
Construct balanced symbol equation for the reaction between Fe²⁺
Fe²⁺ 2OH⁻ →Fe(OH)₂
Construct balanced symbol equation for the reaction between Fe³⁺
Fe³⁺+3OH⁻ →Fe(OH)₃
