Across
- 5. a miniature solar system
- 8. very stable and not reactive
- 9. a measure of the full of gravity of the earth in a body
- 11. Group or family
- 12. left side of the periodic table
- 13. distance from the nucleus to the last energy level
- 15. smallest estimated value
- 17. good element of a body
- 22. mass of substance per unit volume
- 24. transition element and it is in the middle of the periodic table
- 26. refers to the number of protons equal to number of electrons
- 27. retain only 1 uncertain digit
- 28. rare earth elements
- 29. salt-form
Down
- 1. number plus unit correct of significant figure
- 2. wherein substance can believe as acid or base at the same time
- 3. form strong bases
- 4. refers us to the number of exact digits plus one digit which is estimated
- 6. right side of the periodic table
- 7. organized, systematic arrangement of known elements based on INCREASING atomic number
- 10. building blocks of element
- 14. amount of matter in an object
- 15. responsible if condition is maintained
- 16. expansion due to increase kinetic energy of molecule
- 18. zero all molecular motion are dead
- 19. combining of two or more elements in definite combination or ratio
- 20. constant composition
- 21. a negatively charged subatomic particle
- 23. a pure substance that cannot be broken down into simpler substance by a chemicalreaction
- 25. smallest exact digit or line which is taken directly from device