PHYSICAL SCIENCE
Ch 12 - Elements and Their Properties
| 1. ______________include: the iron triad; the coinage
metals; and zinc, cadmium, and mercury.
2. ________ include: lithium, sodium, potassium, rubidium, cesium, and francium. 3. The ___________(Group 2) are so reactive that they aren’t found free in nature. 4. _______are forms of the same element having different molecular structures (like graphite & diamonds). 5. The ____________include: beryllium, magnesium, calcium, strontium, barium, and radium. 6. _______________include: fluorine, chlorine, bromine, iodine, and astatine. 7. __________________are made using Group 13 elements gallium, indium, and thallium. 8. Three forms of carbon include: buckminster-fullerene, diamond, and _____________. 9. _____________is where positively charged metallic ions are surrounded by a “sea of electrons.” 10. Group 1 is the _________________. They conduct heat and electricity well and are highly reactive. 11. ______and some other gases are often found as diatomic molecules (2 atoms of the same element). 12. Only elements in the _________can be magnetic. 13. ___________is often used in electric wiring due to its ability to conduct electricity. 14. The ___________________have atomic numbers 58-71. 15. All the ________(Group 17) have 7 outer electrons and form both covalent and ionic compounds. 16. A typical metal is a hard, shiny solid that is malleable, ductile, and a good conductor due to ________. 17. ___________means it can be hammered or rolled into sheets. 18. _____________________have atomic numbers greater than 92 (uranium is #92). 19. _____________aren’t natural and must be produced in a lab. 20. _________, normally a shiny gray solid derived from seawater, can sublimate (go directly to a gas). 21. The _(Group 18) are elements whose properties and uses are related to their chemical stability. 22. _____________have atomic numbers 90-103. 23. The only metalloid in the boron group is the element ______________. 24. The ____________include: helium, neon, argon, krypton, xenon, and radon. 25. What is the lifespan of synthetic elements? Why is this important to their use? |