5. Last Name of Person Who Developed the Octet Rule in 1916

Chemistry-GName:

Test Review: Chapter7Date:

Across

5. last name of person who developed the octet rule in 1916

6. (two words) a type of substance composed of positive and negative ions

7. a charged atom or group of atoms

10. a positively charged atom or group of atoms

13. a neutral group of atoms that act as a unit

14. substanceswhich conduct electricity when melted or dissolved (ionic compounds)

15. a homogeneous mixture of two or more metals

18. (two words) shorthand notation which indicates the kinds and numbers of atoms in a compound

20. ______alloys are made up of metals with cations of similar sizes

22. (two words) a type of substance composed of molecules

Down

1. name for electrons in the outer energy levels of atoms

2. type of particle gained when a negatively charged ion is formed

3. name for the most stable electron configuration having eighteen valence electrons (s2p6d10)

4. a negatively charged atom or group of atoms

7. ______alloys are made up of metals with cations of much different sizes

8. (two words) shorthand notation which indicates the kinds and numbers of atoms in a molecular compound

9. (two words) shorthand notation which indicates the kinds and numbers of atoms in an ionic compound

11. name for the most stable electron configuration having eight valence electrons (s2p6)

12. word describing the reactivity of the noble gases

16. substance made up of two or more elements chemically combined

17. element which is stable, a noble gas, yet lacks eight electrons in its valence shell (s2)

19. an alloy of mercury

20. a common name for ionic compounds

21. type of compound which is composed of ions and are brittle crystalline solids at room temperature

23. Show the ionic and dot equation for the bond of calcium and chlorine:

Ion equation:

Dot equation:

24. Write the balanced chemical equations, ionic equations and net ionic equations for the following pairs of ionic compounds. The precipitate, if formed, can be determined using the solubility table on the back page. (write “No precipitate” if a precipitate would not form)

a. aqueous iron(II) nitrate and aqueous potassium phosphate

chemical equation :

ionic equation :

net ionic equation :

b. aqueous magnesium chlorate and aqueous copper(II) sulfate

chemical equation :

ionic equation :

net ionic equation :

25. Write the net reactions for the following combinations of aqueous ionic compounds(if a precipitate forms):

a. sodium bromide and lead(II) acetate

b. lithium hydroxide and iron(III) chloride

c. ammonium carbonate and calcium bromide

d. barium chloride and ammonium hydroxide

26. Match the following:

_____ made up of a metal and a nonmetala. ionic compounds

_____ made up of two or more nonmetalsb. covalent compounds (molecular)

_____ bond is formed by the sharing of electrons

_____ bond is formed by the transfer of electrons

_____ (NH4)3PO3

_____ C8H18

_____CaSO4

_____are electrolytes

_____called salts

27. Write the formula or name of the following compounds

______Fe3(PO4)2 ______tin(IV) oxalate

______Mn(C2H3O2)3 ______magnesium hydroxide

______Cr(CO3)3 ______copper(I) sulfate