Quiz Review 2.1 & 2.2

1) A chemical bond is a ____________________________

2) Expression that shows number & type of atoms in a compound is

called___________________________________________

3) The number that shows how many atoms of an element are in a

compound is called _____________________________

4) Metals tend to form _____________ ions & nonmetals

_______________ ions.

5) Draw Lewis Structure:

a) Mg

b) Cl

c) S

d) Ar

6) Hoy many electrons will each element los or gai n forming an ion?

Write the symbol.

a) Ca Lose 2 Ca2+

b) Al ______ ______

c) P _______ ______

d) F _______ ______

7) Indicate how many atoms of each element are present in the

following compounds:

a) Ba (NO3)2 Ba=_____ N=______ O=_______

b) Al2(Cr2O7)3 Al=______ Cr=_____ O=_______

8) Ionic bonds are formed when atoms _________ electrons. (share or

transfer9

9) Name the following ionic compounds:

a) Na2S

b) Ca3P2

c) MgBr2

d) BeCl2

10) Write the chemical formula.

a) Potassium nitride

b) Lithium Oxide

c) Barium Iodide

d) Cesium fluoride

11) Which pair of elements is likely to form ionic compounds? (should

be metal & nonmetal) write yes or no

a) Cl & Br ________

b) K & He ________

c) I & Na ________

d) Li & F ________

12) Which of the following is NOT ionic?

a) CaS ______

b) NH3

c) Na2O

d) Cl2O7