Cheryl was asked to clasify some chemical reactions as either endothermic or exothermic reaction. She added 5.0g of five different solids to 20 mL of water and monitored the temperature change until all of the solid had dissolved. The results of the experiment are shown in the table below. List the solids that underwent exothermic reaction in solution and those that underwent endothermic reactions.

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.

d we did this already