Unit 1 Keywords

Across

• 1. Amount of solute, in mol, dissolved per 1 dm³ of solution (13)
• 4. Amount of any substance containing as many particles as there are carbon atoms in exactly 12g of carbon-12 isotope (4)
• 5. Weighted mean mass of a formula unit compared with one twelfth of the mass of an atom of carbon 12 (7, 7, 4)
• 6. Type of base dissolved in water forming OH⁻ ions (6)
• 7. Negatively charged ion (5)
• 8. A positively or negatively charged atom (3)
• 9. Positively charged ion (6)
• 10. Number of protons in nucleus of an atom (6, 6)