Chemistry and the Periodic Table

3. The earliest known concept of the atom came from which Greek philosopher…
5. Who used John Dalton's concepts to create the first periodic table?
7. Atoms are MOST stable when the level of valence electron seats is…
8. Subatomic particle with almost no mass
10. _____, air, fire and water were thought to be the first known elements
14. Scientists have learned how to study atoms. They study atoms by studying how matter…
15. The “splitting” of the atom is the basis for … energy
17. The outermost electrons on an atom control which atoms bond…
18. Electrons are found in different … or levels surrounding the nucleus
19. What English chemist re-introduced the concept of the atom in the early 1800s (1808)?
22. Dmitri Mendeleev organized the periodic table by the element's ...
23. Electrons fill the levels … to the nucleus first.
24. Protons have a ... charge
26. The protons (+) and electrons (-) in an atom … each other out for the atom has a neutral charge
27. Chemistry is the study of…

1. The ... of one element are different from the ... of any other element
2. The nucleus has an overall … charge
4. Neutrons are…(remember my jingle😀)
6. An atom has the same number of protons and electrons then it has … overall charge
9. The … electrons are the outermost electrons of an atom
11. The atomic number is equal to the number of …
12. Mendeleev’s periodic table left spaces for elements that were yet to be…
13. What two subatomic particles make up the nucleus of the atom? protons and…
15. Electrons have a ... charge
16. Atoms are composed of 3 … particles
20. A new level of ‘electron seats’ is not available until … the seats in the previous row have been filled.
21. The building block of all matter is the…
25. The number of protons in an atom helps to ... what element it is.