Question 9
The table compares the reactants and product when magnesium burns.
| Property | Magnesium | Oxygen | Magnesium oxide |
|---|---|---|---|
| Element or compound? | element | element | compound |
| State at room temperature | solid | gas | solid |
| Appearance | soft, shiny, malleable | colourless, has no smell | white, powdery |
| Conducts electricity? | yes | no | no |
| Melting point in °C | 651 | −214 | 2800 |
Compare the melting points of magnesium, oxygen and magnesium oxide.
| Property | Magnesium | Oxygen | Magnesium oxide |
|---|---|---|---|
| Element or compound? | element | element | compound |
| State at room temperature | solid | gas | solid |
| Appearance | soft, shiny, malleable | colourless, has no smell | white, powdery |
| Conducts electricity? | yes | no | no |
| Melting point in °C | 651 | −214 | 2800 |
Compare the melting points of magnesium, oxygen and magnesium oxide.
