Consider the diagram below.

what does d represent?
a. energy of the products
b. energy of the reactants
c. reactants, q + r
d. products, n + m

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

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.

Which characteristics can be used to differentiate star systems? check all that apply.