The 5 postulates of Dalton's Atomic Theory

• Elements are made of tiny particles called atoms.

I think this is true because everything is made of atoms are there are very many that combine together. 

• All atoms of a given element are identical.

I think this is false because there are different types of atoms.

• Atoms cannot be split, created, or destroyed.

I think this is false because I think atoms can be destroyed. 

• Atoms of different elements combine in simple whole-number ratios to form compounds.

I think this is true because atoms combine together to form compounds.

• A chemical reaction is a rearrangement of atoms.

I think this is true because a chemical reaction does involve a rearrangement of atoms to make the products.

References

1. "John Dalton": http://en.wikipedia.org/wiki/John_Dalton
2. "Dalton's Atomic Theory": http://www.iun.edu/~cpanhd/C101webnotes/composition/dalton.html