Identify which type of chemical reaction is shown: 2NaF + Br2 → 2NaBr + F2

Answer choices:
Single Replacement/Displacement
Synthesis/Combination
Double Replacement/Displacement
Decomposition
Combustion

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering