Download Atomic Crossword Name: Period: ____

Atomic Crossword
Name: ______________________________
Period: ____
Across
2. "Aech too oh"
4. The smallest element
7. Particle with no charge
8. Greek thinker who first coined the term "atomos"
11. A _____________ electron is in the outermost shell of an atom
12. Formed when atoms share electrons
14. Has a different number of neutrons than normal
15. The splitting of an atomic nucleus (usually with heavy elements)
17. British scientist who formulated our modern atomic theory
22. The merging of two atomic nuclei (usually with light elements)
24. Negatively-charged particle
25. The same as the number of protons
29. An atom that has too many or too few electrons
30. A positively charged atom
31. The "nonexistent" rings that hold electrons
32. C, Fe, Au are all examples of this
Down
1. "...I wonder what happens if I shoot alpha particles at a piece of
gold..."
3. Two neutrons and two protons
5. Smallest piece of matter that still retains the properties of an
element
6. Came up with the orbital model of atoms
9. "Plum pudding model" scientist
10. A man just full of "uncertainty"
13. This element makes up most of the atmosphere
16. We need this gas to keep living (even though it burns!)
18. The average weight of an element
19. The study of things that are very small
20. A negatively charged atom
21. Where you find most of the mass of the atom
23. This element makes 4 bonds and is very important for our bodies
26. A type of element that doesn't like to form bonds
27. Two or more atoms bonded together
28. Positively-charged particle
Word List:
Proton
Neutron
Electron
Nucleus
Orbital
Atomicnumber
Atomicmass
Atomicsymbol
Hydrogen
Ion
Anion
Cation
Valence
Noblegas
Isotope
Fission
Fusion
Bond
Water
Nitrogen
Oxygen
Carbon
Atom
Molecule
Democritus
Dalton
Thomson
Rutherford
Bohr
Heisenberg
Quantummechanics
Alphaparticle