8Th Grade Science Topic H Study Guide: Periodic Table 1

Name: ______Date: ______Class Period: ______

8th Grade Science Topic H Study Guide: Periodic Table 1. Be, Mg, Ca, Sr and Ba are all in the same GROUP

2. Zr, Nb, Mo and Tc are all in the same ______: PERIOD

_ D__ 3. Group I elements share certain properties. These include: A Silvery in color B Very malleable C very reactive to water D All the above

4. Groups 13-16 (3A – 6A) elements are split in a stair step pattern. Elements bordering this line are called: METALOIDS

_J__ 5. Group 17 elements share many of the same properties, like other groups. These properties include: F Form salts G Non-metals H Corrosive J All of these _ D__ 6. Group 8A elements share many of the same properties, like other groups. These properties include: A Form gasses B Non-metallic C Unreactive D All of these _F__ 7. The noble gases, such as helium and xenon, are non-reactive because: F they have completely filled outer electron shells. G they are chemically unstable. H they are unusually large atoms. J they are in the same family as Krypton, which can kill even Superman. __C_ 8. Chlorine, element number 17, is located in the third row and the next-to-the-last group of the periodic table. How many electron shells would be completely filled by a neutral atom of chlorine? How many electrons would be left over? A 1 shell filled, 7 electrons left over C 2 shells filled, 7 electrons left over B 1 shell filled, 1 electron left over D 2 shells filled, 1 electron left over __F_ 9. Fluorine, element number 9, is located in the second row and the next-to-the-last group of the periodic table. How many electron shells would be completely filled by a neutral atom of fluorine? How many electrons would be left over? F 1 shell filled, 7 electrons left over H 2 shells filled, 7 electrons left over G 1 shell filled, 1 electron left over J 2 shells filled, 1 electron left over

10. Elements in the same column on the periodic table have similar chemical reactivity because: THEY HAVE THE SAME NUMBER OF VALENCE ELECTRONS __B__ 11. When Mendeleev published his periodic table, there were some spaces for undiscovered elements. Figure 3-1 is a section of a similar table. A reasonable value for the atomic mass of the missing element is ____. A 101 B 72.3 C 68.2 D 34.8

12. Every element has its own atomic number. The atomic number is the number of ______in the nucleus of an atom of the element. PROTONS 13. In the modern periodic table, elements are arranged according to increasing ATOMIC NUMBER(protons) __J__ 14. Which of the following elements is most similar to carbon? F Boron G Dioxide H Nitrogen J Silicon (SAME GROUP) 15. Name 3 properties of metals. LUSTROUS (SHINY), MALLEABLE, CONDUCTIVE

_H__ 16. Which of the following traits do calcium and selenium have in common? SAME PERIOD=SAME ENERGY F Atomic number G Atomic mass H Energy levels J Valence electrons LEVELS

Name: ______Date: ______Class Period: ______

Using your periodic table, fill in the empty cells in the table below. The first row is an example. Element # Energy # Valence Group Metal, Element Levels Electrons Name Non-metal, with Similar (Shells, or Metalloid Properties Rings) Mg 3 2 Alkali Earth Metal Be 17. Cl 3 7 HALOGEN NON-METAL FLUORINE 18. Xe 5 8 NOBLE GAS NON-METAL ARGON(Ar) 19. C(ONLY OTHER NON-METAL) 2 4 CARBON Non-Metal Si 20. K 4 1 ALKALI METALS METALS SODIUM(Na)

21. What can you say about elements near each other in the same period? SIMILAR ATOMIC MASS OR MASS #

22. What 2 properties usually (or always) increase as you move left to right across a period? ATOMIC # & MASS #

___ 23.

__G___ 24.

Name: ______Date: ______Class Period: ______

__C__ 25.

__H__ 26.

__C__ 27. The model of the periodic table below shows the locations of four elements.

A student is asked to identify an element that is a pale-yellow brittle solid and does not conduct electricity. At which location in this periodic table would the element most likely be found?

A 1 B 2 C 3 D 4

Name: ______Date: ______Class Period: ______

__B___ 28. A student is studying the ways different elements are similar to one another. Diagrams of atoms from four different elements are shown below.

Which two atoms are of elements in the same group in the periodic table?

A Atom 1 and 2 B Atom 1 and 4 C Atom 2 and 3 D Atom 3 and 4

___G__ 29.

Name: ______Date: ______Class Period: ______

__B___ 30. Which pair of properties describes the elements in Group 18?

A They are chemically stable and liquid at room temperature. B They have eight valence electrons and are flammable. C They are magnetic and boil at low temperatures. D They are gaseous at room temperature and chemically stable.

__D___ 31.

32. In the diagram below, identify the family or groups indicated by A, C and D.

NOBLE Non-metals

METALS HALOGENS GASSE=S

A B C D Student 1 Metals Non-metals Noble Gases Helium Group Student 2 Transitional Metals Metalloids Flourine Group Noble Gases Student 3 Non-metals Metals Noble Gases Inert Gases Student 4 Metals Non-Metal Halogens Noble Gases

Name: ______Date: ______Class Period: ______

___ 33. Students in a science class prepared flash cards so that they could quiz one another about the arrangement of the periodic table. One of the flash cards contained information about two elements, Element L and Element M. The students had to use the information on the flash card to determine possible positions of the two elements on a blank periodic table. Which periodic table has the elements placed in locations that match the information on the flash card?