Sodium and Potassium reacts violently with water and the metals dart about on the surface. However, if metals are wrapped in metal gauze,they can be kept underwater. A funnel is inverted over the metal gauze . A test tube full of water is inverted over the funnel. The hydrogen is given off in a steady stream, the quantity of water used should be large to prevent over-heating. in the above description, sodium is replaced with calcium but calcium doesn't have to be wrapped in metal gauze.Why?
Sodium and Potassium reacts violently with water and the metals dart about on the surface. However, if metals are wrapped in metal gauze,they can be kept underwater. A funnel is inverted over the metal gauze . A test tube full of water is inverted over the funnel. The hydrogen is given off in a steady stream, the quantity of water used should be large to prevent over-heating. in the above description, sodium is replaced with calcium but calcium doesn't have to be wrapped in metal gauze.Why?
Trishala Shah , 13 Years ago
Grade
