Across
- 2. prefix means millionth
- 4. author of the modern periodic table
- 9. group VII-A
- 11. prefix means million
- 12. describes the shape of the electron wave
- 14. descries the direction if the electron spin
- 16. negatively charge particles
- 17. refers to the estimated value taken from the device.
- 18. the measurement of coldness or hotness
- 20. atomic number 40
- 21. positively charge particles
- 23. smallest exact value taken directly from the device.
- 26. father of nuclear physics
- 28. Li, Na, K, Rb, Cs, Fr
- 29. anything that has mass and occupy volume
- 30. mass of a substance per unit volume
Down
- 1. consists of positively-charge nucleus at the center and surrounded by an electron cloud.
- 3. a pure substance formed by chemical means
- 5. Cu, Ag, An
- 6. the study of the composition, structure, properties, and change of matter
- 7. describes the orientation of the electron wave
- 8. a pure substance that cannot be broken down by chemical means
- 10. 2 quark down and 1 quark up
- 13. quantity of matter in a body
- 15. ratio of the density of a substance to the density of H20
- 19. composed of more than one component
- 22. he said that "all matter exhibits wave property"
- 24. smallest region of space where the probability of finding the electron is great
- 25. the man behind the law of octave
- 27. force of attraction of the earth due to gravity