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