Metals

Question 1

Recall the reactivity series

Answer 1

“Please Stop Like Calling Me A Careless Zebra Instead Try Learning How Copper Saves Gold Plates”

• Potassium
• Sodium
• Lithium
• Calcium
• Magnesium
• Aluminum
• Carbon
• Zinc
• Iron
• Tin
• Lead
• Hydrogen
• Copper
• Silver
• Gold
• Platinum

Question 2

What affects how expensive it is to extract a particular metal?

Answer 2

how REACTIVE it is;

• The most reactive metals form the MOST STABLE compounds
• Require more energy to extract
• The process is more expensive

Question 3

How does displacement for?

Answer 3

A more reactive metal can displace a less reactive metal from a compound- the more reactive metal is more likely to STAY in its ionic state

• The more reactive metal is always OXIDISED
• The less reactive metal is always REDUCED

Question 4

How does the position of a metal on the reactivity series affect the process needed to extract it?

Answer 4

• Metals lower than Carbon in the reactivity series can be extracted by REDUCTION using Carbon
• Metals higher than Carbon are extracted by electrolysis of molten compounds (much more EXPENSIVE)

Question 5

How can displacement reactions be used to determine whether a metal is more/ less reactive than hydrogen?

Answer 5

-If hydrogen is MORE reactive, it will displace the metal, e.g:
Metal oxide + H2 -> Metal + water

-If hydrogen is LESS reactive, it will not displace the metal- instead the metals can be used to displace hydrogen from its oxide, e.g:
Metal + H2O -> Metal hydroxide + H2

Question 6

How does the structure of alloys help with their uses?

Answer 6

-An alloy is 2 or more metals mixed together;
the different size particle disrupt the structure and prevent layers from sliding over each other
-greatly increases the strength of the material

Question 7

State the different properties of transition metals & how this helps with their uses

Answer 7

• Many transition metal particles are similar in size; suitable for alloying
• Transition metals form stable ions in different states; metal compounds are useful as catalysts as they remain chemically unchanged/ are not used up
• Metals, alone, are also good catalysts
• Often form coloured compounds