Please help me The number of protons in carbon (C) is
A equal to the atomic mass.
B can be determined by adding the atomic number to the atomic mass.
C can be determined by subtracting the atomic number from the atomic mass.
D is equal to the atomic number.

Ineed with my science work! it’s due tomorrow!

Freezing 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.

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?