Which of the following is an element?
a. carbon monoxide gas (co)
b. magnesium chloride salt (mgcl)
c. hydrochloric acid (hcl)
d. zinc metal (zn)

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Define the kinetic molecular theory

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?