4.6 TRANSITION ELEMENTS

Iron is a transition metal. Which of the following supports the above statement?

• Acts as a catalyst in the Haber process

• Does not form compounds

• Form a coloured compound

• Conducts electricity well

Give one example of transition elements used in industry. (write the name of the element only)

(a)  

What are elements in groups 3-12 called?

• nonmetals
• metals
• halogens
• transition elements

Transition metals are ____

• metals
• nonmetals
• halogens
• metalloids

Transition elements form _________ compound and are good ________.

• Coloured

• Density

• Middle

• Catalysts

Give the colour of the following transition ions : Iron (II) ion

• Brown

• Green

• Orange

• Pink

Give the colour of the following transition ions : Iron (III) ion

• Green

• Brown

• Blue

• Orange

The transition elements are also known as transition (a)  

Transition elements function as a catalyst. What is catalyst?

• A chemical that can slow down the rate of a chemical reaction

• A chemical that can decrease the rate of a chemical reaction

• A chemical that can increase the rate of a chemical reaction

• A chemical that can reduce the rate of a chemical reaction

Gemstones such as diamonds, rubies, emeralds, and sapphires have different colours. Why?

• This is because gemstones contain ions or compounds of the metal elements

• This is because gemstones contain ions or compounds of the metallic elements

• This is because gemstones contain ions or compounds of the non-metal elements

• This is because gemstones contain ions or compounds of the transition elements