Across
- 1. the only polyatomic cation
- 4. hard metals
- 7. the splitting of an atom
- 8. can be drawn into a wire
- 9. how close the data points are to each other
- 10. discovered the neutron
- 13. can be hammered into thin sheets without breaking
- 15. states that it is impossible to know the position and the velocity of an electron at the same time
- 17. how close a data point is to the accepted (true) value
- 19. this type of zero is never significant
- 23. inert family of elements
- 26. most reactive nonmetals
- 29. the energy required to remove an electron from a gaseous atom
- 30. used to measure the volume of a liquid
- 33. discovered that an atom is mostly empty space
- 35. ionic compounds are always _________! (36)
- 36. resemble a helium nucleus
- 38. shatter easily
- 39. period 3 group 14 (31)
- 40. number the number of protons and neutrons in an atom
Down
- 2. typically solids
- 3. generally good conductors of electricity but not heat
- 5. there are 1000 _____ in a gram
- 6. also known as the planetary model
- 11. arranged the elements in order of increasing atomic number
- 12. has the largest atomic radius in period 6
- 14. 1s2 2s2 2p2. (21)
- 16. used when chemicals get on your torso
- 18. numerals what we use to indicate the charge of a transition metal or post-transition metal
- 20. the distance from crest to crest or trough to trough
- 21. Father of the Modern Periodic Table
- 22. can only be stopped by concrete or a few centimeters of lead
- 24. the most electronegative atom
- 25. produced an ion with a +1 charge
- 27. the smallest subatomic particle
- 28. inversely related to wavelength
- 29. atoms of the same element that have different numbers of neutrons. (13)
- 31. subatomic particles with a positive charge
- 32. most reactive metals
- 34. mass/volume
- 37. the _________ principle states that electrons fill the lowest available energy level and sub level before filling the next one.