Across
- 2. chemical element of the nitrogen group that is a soft waxy solid at room temperature
- 5. a moderately noble metal, being unaffected by nonoxidizing or noncomplexing dilute acids in the absence of air
- 7. is a nonmetallic chemical element and the heaviest nonradioactive halogen.
- 8. a metallic element of the rare-earth group with atomic number 65
- 11. is a chemical element – a substance that contains only one type of atom. Its official chemical symbol is Au
- 13. a transuranium element that occupies position 118 in the periodic table and is one of the noble gases
- 16. is a chemical element; it has symbol Ni and atomic number 28
- 17. is a chemical element with an atomic number of 8
- 18. is a chemical element with symbol Ca and atomic number 20
- 20. is a chemical element; it has symbol Dy, It is a rare-earth element in the lanthanide series with a metallic silver luster
- 24. a radioactive metallic element produced artificially with atomic number of 101
- 26. he chemical element of atomic number 68, a soft silvery-white metal of the lanthanide series
- 27. is the most abundant metallic element in Earth's crust and the most widely used nonferrous metal.
- 29. is a ductile and malleable silvery white metal that is soft enough to be cut with a knife
- 30. nonmetallic chemical element belonging to the oxygen group, WITH ATOMIC SYMBOL OF S
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- 1. the chemical element of atomic number 69, a soft silvery-white metal of the lanthanide series
- 3. a nonmetallic gaseous chemical element with atomic number 1
- 4. A metallic element that is important in body functions such as regulation of blood pressure and of water content in cells, transmission of nerve impulses, digestion, muscle contraction, and heartbeat.
- 6. a silver white soft waxy ductile element of the alkali metal group that occurs abundantly in nature with atomic number of 11
- 9. is a chemical element – a substance that contains only one type of atom. Its official chemical symbol is Mg
- 10. is the cheapest alternative when nitrogen is not sufficiently inert with an atomic number of 18
- 12. is a chemical element with atomic number of 74
- 14. is a chemical element; it has symbol Sc and atomic number 21
- 15. a light colorless nonflammable element that is found in various natural gases and is used especially to blow up balloons
- 19. is a chemical element; it has symbol Fe
- 21. chemical element of atomic number 47, a white lustrous metal valued for its decorative beauty and electrical conductivity.
- 22. most reactive chemical element and the lightest member of the halogen elements
- 23. A nonmetallic element that makes up about 78 percent of the atmosphere by volume, occurring as a colorless, odorless gas
- 25. one of the chemical elements found in nature, with an atomic symbol of C
- 28. a soft silver-white element of the alkali metal group that is the lightest metal known, with atomic number of 3