The reaction of ammonia and hydrogen chloride gas: nh3(s) + hcl(g) --> nh4cl (s) + energy may be classified as a a) replacement reaction b) synthesis reaction c) water-forming reaction d) decomposition reaction

What are transitions between a liquid and a solid called? identify which way they are transitioning

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?