Question 13
A lava lamp uses the difference in density between paraffin wax and a surrounding liquid. When heated, the wax becomes less dense and rises. As it cools, it becomes denser and sinks. This cycle causes the wax globules to continuously move up and down inside the lamp.
Tammy constructed a halite fountain as shown in the diagram below. There are two fluids in the fountain — coloured water and a solution containing the halite, sodium chloride.
What could be the reason Tammy used a saturated sodium chloride solution to fill bottle B?
Tammy constructed a halite fountain as shown in the diagram below. There are two fluids in the fountain — coloured water and a solution containing the halite, sodium chloride.
What could be the reason Tammy used a saturated sodium chloride solution to fill bottle B?
