Which are examples of physical weathering? check all that apply.
grinding away of rock surface
top layers flaking off due to release of pressure
water dissolving soft rock
rust forming due to oxidation
temperature changes from hot to cold
animals digging burrows to make homes
water freezing, expanding and thawing repeatedly
acid rain weathering a statue
tree roots growing in the cracks of rock

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.