Grade 11 Physical Science 2015 Paper 2

Molecules such as CO2 and H2O are formed through covalent bonding.  2.1 Define the term covalent bonding. (2)  2.2 ONE of the above molecules has lone pairs of electrons on the central atom. Draw the Lewis diagram for this molecule. (2)  2.3 H3O+ is formed when H2O forms a dative covalent bond with an H+ … Read more

1.1 According to the Arrhenius theory, all bases …  A) are proton donors.  B) are proton acceptors.  C) form H3O+ ions in solution. D) form OH‾ ions in solution. (2)  1.2 The number of neutrons in an atom of N157 is …  A) 5  B) 7  C) 8  D) 15 (2)  1.3 Which ONE of the following has the strongest forces between its … Read more