Sodium
/ˈsəʊdiəm/noun
A soft, light, and extremely reactive metal that is a chemical element of atomic number 11.
Sodium reacts quickly with water.
Often appears as...
- sodium chloride
- sodium bicarbonate
Usage tips
Academic
Definition 1 of 2
Pro Tip 1/3Safety Alert
Stress on sodium's reactivity and the need for careful handling in scientific contexts.
Use goggles when demonstrating sodium's reaction with water.
Pro Tip 2/3Not Ordinary Metal
Highlight that unlike most metals, sodium is soft and can be cut with a knife.
Pure sodium is so soft you could cut it with a butter knife.
Pro Tip 3/3Science Projects
Suggest its frequent use in school science experiments to demonstrate chemical reactions.
For our project, we observed sodium reacting explosively with water.
Compare with
cationelementmetalsalt
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