Not Graded Read a
Unit
Answer
Questions
2) "Cephalopods are structurally much more advanced than other invertebrates. They also show much more
advanced behavior than other invertebrates. Fossil records indicate that cephalopods were once the most
dominant organism in the ocean but today there are fewer than 700 living species. What could have happened
over time to reduce numbers?"
Split
Screen
Split

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.