Across
- 2. Rutherford discovered that the atom has a small, positive, dense nucleus through his
- 4. How many significant figures are there in the value 9405.000210
- 7. Bohr’s proposal that electrons orbit the nucleus like planets around the sun was
- 11. Groups 3B to 2B comprise the
- 12. Leading zeros are [blank] significant figures
- 13. Which group/family is indicated if it is gray, hard, brittle, and has high melting and boiling points?
- 15. Henry Moseley was an Englishman who corrected Mendeleev and created a periodic table according to the
- 16. The only particle that will appear on the reactant side of an equation is when an [blank] occurs
Down
- 1. This Russian chemist published the first periodic table arranged according to atomic mass and is known as the “Father of the Periodic Table”
- 3. Ions are formed in reflection of a change in the number of
- 5. Through the Cathode Ray Tube Experiment, Thomson discovered that electrons are [blank] charged
- 6. Dalton’s theory that atoms were like a solid sphere
- 8. If I have 248.23 grams of Chlorine, how many moles is this? Round to the nearest thousandth, and exclude units.
- 9. What phase is Group 18 on the periodic table at 25°C and 1 atm?
- 10. Alpha particles can be stopped by
- 14. Silver exists in nature in two isotope, Ag-107 and Ag-109. If the atomic mass of silver is 107.87 amu, what is the percentage of abundance of the Ag-109 isotope? Round to the nearest tenth, and exclude units.