How can you tell when a solid substance dissolves in water and does not react?
A. Gas bubbles form in the water.
B. The substance starts to fizz in the water and gives off an odor.
O C. When the water evaporates, the substance is left behind.
O D. The water changes color and grows warm.

Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain

2. how is heavy water different from normal water

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)