Forming Bonds Assignment




1.


a) O2 b) HCl


c) O2N d) H2S


2. a + symbol in a chemical equation means and or also. A –› symbol means producers or equals.


In a chemical reaction a product is what is produced by the chemical reaction and reactants are what creates the chemical reaction.


3.


a) Balanced


b) Balanced


c) H2 + Cl2 –› 2HCl


d) N2 + 3H2 –› 2NH3


e) Mg + 2HCl –› MgCl2 +H2


f) 2Pb(NO3)2 –› 2PbO + 4NO2 + O2


4.


a) C + O2 CO


b) Na+HCl –› NaCl + H


c) SO2 + O2 O3


d) C12H22O11 –› C+ H2O


e) Fe + O2 –› FeO2


5.


a) Zinc Zn b) nitrate NO3 c) aluminum Al d) Oxide O2


6. The valancy of metals are all positives they are all cations


7.


Substance


Formula


Names of elements


Number of atoms of each element


total number of atoms in one molecule


Magnesium oxide


MgO


Magnesium oxygen


1,1


2


Sulphur dioxide


SO2


Sulfate oxygen


1,2


3


Ammonia


NH3


Nitrogen Hydrogen


1,3


4


Hydrochloric acid


HCl


Hydrogen Chlorine


1,1


2


Cane sugar


C12H22O11


Carbon Hydrogen Oxygen


12,22,11


45


Magnesium suphate


MgSO4


Magnesium Sulfate Oxygen


1,1,4


6


Hydrogen peroxide


H2O2


Hydrogen Oxygen


2,2


4


Sodium hydrogen carbonate


NaHCO3


Sodium hydrogen carbon oxygen


1,1,1,3


6


8. a) 1 b) 2 c)3


9. a) Cl+Na –› NaCl


b) CO3+ Na–› NaCO3


c) PO3+Na –› NaPO3


10.


a) CuCl


b) (NH4)2CO3


c) PbCO3


d) (Fe)2(O)3


e) AgI


f) (Cu)2O


11.


a) silver bromide


b) sodium sulfate


c) iron chloride


d) lead nitrate


e) hydrochloric acid


f) copper oxide

Part B
1. Covalent bonding involves the sharing of electrons. Ionic bonding involves the transfer of electrons


2.