Ionic or Covalent? (worksheet) - GCSE Chemistry/ Combined Science ... - Free Printable

I'll solve this problem by determining whether each compound uses ionic or covalent bonding based on the general rule provided: Metal + Non-Metal = Ionic Bonding, Non-Metal + Non-Metal = Covalent Bonding.

Let me analyze each compound one by one:

1. H₂ (Hydrogen gas) - Both atoms are hydrogen (non-metal), so this is covalent bonding.
2. Cl₂ (Chlorine gas) - Both atoms are chlorine (non-metal), so this is covalent bonding.
3. O₂ (Oxygen gas) - Both atoms are oxygen (non-metal), so this is covalent bonding.
4. HCl (Hydrogen chloride) - Hydrogen (non-metal) + Chlorine (non-metal), so this is covalent bonding.
5. LiF (Lithium fluoride) - Lithium (metal) + Fluorine (non-metal), so this is ionic bonding.
6. NaCl (Sodium chloride) - Sodium (metal) + Chlorine (non-metal), so this is ionic bonding.
7. NaF (Sodium fluoride) - Sodium (metal) + Fluorine (non-metal), so this is ionic bonding.
8. MgF (Magnesium fluoride) - Magnesium (metal) + Fluorine (non-metal), so this is ionic bonding.
9. NH₃ (Ammonia) - Nitrogen (non-metal) + Hydrogen (non-metal), so this is covalent bonding.

The completed table would be:

| Molecule | Formula | Ionic or Covalent? |
|----------|---------|-------------------|
| Molecule | H₂ | Covalent |
| Molecule | Cl₂ | Covalent |
| Molecule | O₂ | Covalent |
| Hydride | HCl | Covalent |
| Hydride | LiF | Ionic |
| Hydride | NaCl | Ionic |
| Hydride | NaF | Ionic |
| Hydride | MgF | Ionic |
| Hydride | NH₃ | Covalent |

This solution follows the basic rule provided in the image: when a metal bonds with a non-metal, it forms an ionic bond; when two non-metals bond, they form a covalent bond.