Parts of the experiment that are controlled by the scientist are called

a. variables

b. hypotheses

c. controls

d. biologicals

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.

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

How many grams are in one mole of lead?