First 20 Elements

Question 1

What type of structure in Metallic Bonding (2)

Answer 1

Metallic Lattice. Positively charged metal ions and delocalised electrons.

Question 2

Properties of Metals (3)

Answer 2

• High MP/BP
• Can conduct when solid (cos delocolised electrons)
• Higher the MP/BP stonger the metallic bond

Question 3

Covalent Molecular Structure

Answer 3

Joined by COV. bonds (shared pair of electrons)

Question 4

Properties of Cov Molecular (5)

Answer 4

• Low Mp/Bp
• Do not conduct
• Have LDF so biger molecules will have higher Mp/Bp
• Strong covalent bonds BETWEEN ATOMS
• Weak LDF BETWEEN MOLECULES

Question 5

Covalent Network structure

Answer 5

Network. Many thousands of atoms joined by covalent bonds, strong covalent bonds BETWEEN ATOMS.

Question 6

Explain the structure of Diamond

Answer 6

Each carbon is bonded to 4 other carbons, so no free electrons

Covalent bonds

Tetrahedral shape