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PERIODIC TABLE WORKSHEET CHOOSE ANSWERS FROM THIS LIST: TERMS MAY BE USED MORE THAN ONCE, OR NOT AT ALL! atoms electrons neutrons protons atomic number isotopes nucleus valence electrons mass number groups periods metals non−metals transition metal metalloids halogens alkali metal alkaline earth metal cation anion
1. The columns that make up the periodic table are called _____________________________.
2. The rows of the periodic table are referred to as _____________________________.
3. Elements are made up of _____________________________, which are the smallest unit of matter that retains the characteristics of the element.
4. Atoms have a __________________ at the center which contains __________________ and __________________ .
5. __________________ have a single positive charge.
6. __________________ are neutral subatomic particles.
7. Neutral __________________ have an equal number of __________________ and _________________.
8. The _____________________________, is the number of protons in an atom.
9. The _____________________________, is the number of protons plus neutrons in an atom.
10. The number of __________________ , also called the _____________________________, determines the identity of an element.
11. Elements that have the same number of protons but different numbers of neutrons, are called __________________ of the same element.
12. The electrons that are located in the outermost electron shell are called _____________________________.
13. When an atom gains electrons it becomes a __________________ .
14. When an atom loses electrons it becomes a __________________ .
15. __________________ typically form cations.
16. __________________ typically form anions.
17. __________________ and __________________ react to form ionic compounds.
18. __________________ and __________________ react to form molecular compounds.
19. Gr IA elements are commonly referred to as: __________________ .
20. Gr 2A elements are commonly referred to as: __________________ .
21. The element chlorine belongs to a group commonly referred to as the: __________________ .
22. Tungsten is a member of the _____________________________ elements.
23. Si, Ge and Te belong to a collection of elements classified as __________________ .
24. __________________ are generally poor electrical conductors.
25. Elements that are characterized as ductile and malleable are best classified as __________________ .
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