Grade 11 Physical Science 2019 Paper 2

2.1 Ammonia NH3(g) and hypochlorous acid HOCℓ(ℓ) are both examples ofcovalent compounds. 2.1.1 Define the term bonding pair. (2) 2.1.2 Draw Lewis structures for the following molecules: (a) NH3 (2)(b) HOCℓ (2) 2.1.3 Write down the: (a) Number of bonding pairs in NH3 (1)(b) Number of lone pairs on the oxygen atom in HOCℓ (1)(c) … Read more

Various options are provided as possible answers to the following questions. Choose   the answer and write only the letter (A–D) next to the question numbers (1.1 to 1.10) in the ANSWER BOOK, e.g. 1.11 E. Each question has only ONE correct answer. 1.1 The number of valence electrons in a silicon atom is … A … Read more