metalling bonding

Question 1

What are the physical properties of metals?

Answer 1

Conducts electricity , ductile , conducts heat , High melting point,shiny , strong

Question 2

Describe structure of a metal

Answer 2

•Ionic of positive ions
•with delocalised electrons
•Electrostatic forces of attraction between positive ions and electrons

Question 3

Explain why a metal can conduct heat

Answer 3

•delocalised electrons
•free to move
•will transfer energy

Question 4

Explain why a metal can conduct electricity

Answer 4

•delocalised electrons
•free to move
•carry a charge and form a current

Question 5

Explain why metals have a high melting point

Answer 5

•strong electrostatic forces of attraction between positive ions and negative electrons
•lots of energy required to overcome bonds

Question 6

Explain why pure metals can be bent/shaped and streched into wires

Answer 6

•layers of atoms
•can slide

Question 7

Explain why alloys are harder than pure metals

Answer 7

•atoms are different sizes
•layers are disrupted
•so layers cannot easily slide