Science, Chem - Reactivity Series

Question 1

reactivity series

Answer 1

potassium
sodium
calcuium
magnesium
aluminium
carbon
zinc
iron
tin
lead
hydrogen
copper
silver
gold
platinum

Question 2

extracted by electrolysis

Answer 2

• potassium
• sodium
• calcium
• magnesium
• aluminium

Question 3

extracted but heating up carbon

Answer 3

• zinc
• iron
• tin
• lead

Question 4

no need extraction

Answer 4

• copper
• silver
• gold
• platinum

Question 5

reactions of metals with oxygen

Answer 5

• most react vigorously with oxygen

eg. magnesium + oxygen = > magnesium oxide

Question 6

reactions of metals with water

Answer 6

• more reactive metals have better reactions (above zinc)
• not all metals react w water (depends on temp also)
• all metals that react with water form either oxide/hydroxide or hydrogen
• potassium, sodium, lithium and calcium are the most reactive

eg. aluminum + water => aluminum hydroxide + hydrogen