Chapt. 3

Question 1

structure of metals

Answer 1

• have few valence e- so they give up electrons redily to form cations
• 3d lattice
• lost e- more freely between cations = delocalised electrons
• electrostatic attraction between - delocalised electrons and + charged ions

Question 2

properties

Answer 2

• high m.p
• good conductors of energy
• good conductors of heat
• malleable & ductile
• lustrous

Question 3

transitional metals

Answer 3

• high densities
• harder
  higher melting points
• some have strong magnetic properties
• different charges

Question 4

reactivity with water

Answer 4

metal + water = metal hydroxide (OH) + H2

Question 5

reactivity with oxygen

Answer 5

metal + carbon dioxide [O2] = metal oxide

Question 6

reactivity with acids

Answer 6

acid + metal = ionic salt + H2

Question 7

extraction of metals

Answer 7

1. mining
2. ore processing
3. metal extraction
   smelting involves using high temp. with carbon to extract the metal from the metal oxide

Question 8

recycling process

Answer 8

1. collection
2. preparation for recovery
   separating by magnetic or non-magnetic
3. smelting
4. purification