Download chapter 4 crossword pre-ap

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Pre-AP Chemistry
Chapter 4
Crossword & Review
Across
2. Has properties of both metals and nonmetals.
6. Group 17.
7. The energy change that occurs when a neutral atom gains an electron.
8. Lanthanides and actinides are also called __ __ __.
9. Invented the first periodic table.
11. The energy required to remove an electron from an atom or ion.
12. A vertical column on the periodic table.
13. An element whose atomic number is greater than 106.
14. The elements with atomic numbers between 89 and 102.
16. An element in the s-block or p-block of the periodic table.
17. Can be squeezed out into a wire.
19. An element with electrons filling in the d-orbital is called a __ __.
20. Elements in the same group have similar ____.
25. The reduction of the attractive force between a positively charged nucleus and its
outermost electrons due to the cancellation of some of the positive charge by the
negative charges of the inner electrons.
29. A mixture of two or more metals.
30. A measure of the ability of an atom in a chemical compound to attract electrons.
35. This group has eight valence electrons.
36. Elements in group ____ have electron configurations that end in ns2np5.
37. A horizontal row on the periodic table.
38. Group 18.
39. Elements with atomic numbers between 58 and 71.
Down
1. The electronegativity ___ as you move down a group on the periodic table.
3. Alkaline-earth metals have __ valence electrons.
4. The atomic radii of atoms ___ as you move left to right across a period.
5. Group 2 elements.
10. The number of valence electrons of a noble gas.
15. A reaction that affects the nucleus of an atom.
18. Aluminum has ___ valence electrons.
21. An electron that is found in the outermost shell of an atom and that determines the
atom's chemical properties.
22. Gold is in period __.
23. Sodium has ___ valence electron.
24. Can be hammered or rolled into sheets.
26. Half the distance from center to center of two like atoms that are bonded together.
27. This trend doesn't follow the rest as you go across a period. It increases, then
decreases, then increases, then decreases again.
28. The law that states that the repeating physical and chemical properties of elements
change periodically with their atomic number.
30. All the elements in a period have the same number of __ __.
31. The particle accelerator used to make the first synthetic elements.
32. Group 1 elements.
33. The ionization energy __ as you go across a period.
34. The atomic radii __ as you go down a group.
Put the following elements in order by the property given.
a. decreasing electronegativity: arsenic, bromine, calcium
b. increasing atomic radius: arsenic, bromine, calcium
c. increasing ionization energy: polonium, oxygen, selenium
d. decreasing ionic radius: Sn+4, Ag+1, Sr+2
e. decreasing ionization energy: barium, beryllium, boron, calcium, and fluorine