C4

Across

• 1. Colour of copper compounds (4)
• 3. Group 7 is known as the ____ (8)
• 4. Type of bonding where atoms share electrons (8)
• 5. The vertical column in the periodic table (5)
• 6. An atom that gains electrons has this charge (8)
• 7. The horizontal row in the periodic table (6)
• 9. Group 1 is known as the ____ metals (6)
• 10. The process that separated liquids using evaporation and condensation to form a pure liquid (12)