Which points of dalton's atomic theory is supported by these findings? · all elements are composed of atoms ·all atoms of the same element have the same mass and atoms of different elements have different masses ·in a particular compound atoms of different elements are always combined in the same way

Dalton's Theory:
1. all elements is composed of very small particles called atoms 
2. Atoms of a given element are identical in size, mass, and other properties; atoms of different elements differ in size, mass, and properties. 
3. atoms cannot be divided, created, or destroyed
4. Atoms of different elements combine in simple whole number ratios to form chemical compounds 
5. In chemical reactions, atoms are combined, separated, or rearranged.
So as we can see; the first two sentences are correct while the third sentence not supported in the theory

The heat added represents an energy change.