Models of Atoms

3. What Dalton used to support his atomic theory.
6. Unable to be divided into smaller parts.
7. Atoms are not changed into different ones during chemical reactions.
12. According to Dalton, matter cannot be created or this.
14. Process used by Dalton to separate water into its elements.
17. One of the two elements that make up water.
19. The building blocks of all matter.
21. Democritus relied on philosophical thinking rather than experimentation.
22. Smallest particle of matter proposed by Democritus.

1. Characteristics that differ among atoms of different elements.
2. Process during which atoms are rearranged.
4. Information scientists use to support explanations and theories.
5. A scientific explanation supported by evidence.
8. Greek philosopher who first suggested that matter is made of tiny particles.
9. A substance made of atoms from two or more elements.
10. The process of changing the organization of atoms during a reaction.
11. A pure substance made of only one type of atom.
12. Scientist whose atomic theory stated that matter is made of indivisible atoms.
13. Describes the ratio of elements in a compound.
15. Element that, along with hydrogen, makes up water.
16. The study of matter and how it changes.
18. A characteristic that is the same for atoms of the same element according to Dalton.
20. What Democritus lacked to support his atomic ideas.