a) O2 b) HCl Essay Example For Students

a) O2 b) HCl Essay 1. a)O2 b) HClc)O2Nd) H2S2. a + symbol in a chemical equation means and or also. A - symbol meansproducers or equals. In a chemical reaction a product is what is produced by the chemicalreaction 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 + O24. a) C + O2 pic CO b) Na+HCl - NaCl + H c) SO2 + O2 pic O3 d) C12H22O11 - C+ H2O e) Fe + O2 - FeO25. a) Zinc Zn b) nitrate NO3c) aluminum Al d) Oxide O26. The valancy of metals are all positives they are all cations7. |Substance|Formula|Names of|Number of|total number || | |elements|atoms of each|of atoms in || | | |element|one molecule ||Magnesium|MgO|Magnesium|1,1|2||oxide | |oxygen | | ||Sulphur|SO2|Sulfate|1,2|3||dioxide| |oxygen | | ||Ammonia|NH3|Nitrogen|1,3|4|| | |Hydrogen| | ||Hydrochloric |HCl|Hydrogen|1,1|2||acid| |Chlorine| | ||Cane sugar|C12H22O11|Carbon |12,22,11|45|| | |Hydrogen| | || | |Oxygen | | ||Magnesium|MgSO4 |Magnesium|1,1,4 |6||suphate| |Sulfate| | || | |Oxygen | | ||Hydrogen|H2O2|Hydrogen|2,2|4||peroxide| |Oxygen | | ||Sodium |NaHCO3 |Sodium |1,1,1,3|6||hydrogen| |hydrogen| | ||carbonate| |carbon oxygen| | |8.a) 1 b) 2 c)39. a) Cl+Na - NaCl b) CO3+ Na- NaCO3c) PO3+Na - NaPO310. a) CuCl b) (NH4)2CO3 c) PbCO3 d) (Fe)2(O)3 e) AgI f) (Cu)2O11. a) silver bromide b) sodium sulfate c) iron chloride d) lead nitrate e) hydrochloric acid f) copper oxidePart B1. Covalent bonding involves the sharing of electrons. Ionicbonding involves the transfer of electrons2.