Dalton thought that all matter is composed of small particles called atoms which cannot be further divided, created, or destroyed. He also believed that all atoms of the same element were identical and that in chemical reactions atoms were rearranged to created different reactions. These thoughts are known as The atomic Theory created in 1804. Dalton also stated the law of multiple proportions which states that matter is combine in small whole numbered ratios. Finally, Dalton believed that atoms were like billiard balls in that they were round but he did not believe there was anything inside of them.