1) Which of the following is true? a) Protons are positive and electrons have no charge. b) Protons are negative and electrons have no charge. c) Electrons are negative and protons are positive. d) Protons have no charge and electrons are negative. 2) Why is the nucleus positive. a) It contains positive protons and neutral neutrons b) It contains protons and electrons c) It is an ion. d) It contains positive and protons and neutrons. 3) What is the electron configuration of Sodium (proton number 11) a) 2.2.5 b) 2.8.3 c) 2.8.4 d) 2.8.1 4) What is ionic bonding? a) Atoms share electrons b) Ions share electrons c) Atoms gain or loose electrons to become positively or negatively charged. d) Ions gain or loose electrons to become charged. 5) Between what do Ionic bonds form? a) Metals b) Non-metals c) Group 1 elements d) Metals and non-metals 6) Which of the following are true? a) Metals loose electrons b) Metals gain electrons c) Non-metals gain electrons d) A & C 7) Covalent bonding happens between... a) metals b) non-metals c) metals and non-metals d) group 2 elements 8) Which is true about the properties of covalent substances? a) Do not conduct electricity and have high MP and BP. b) Do not conduct electricity and have low MP and BP. c) Conduct electricity when dissolved and have low MP and BP. d) Conduct electricity and have low MP and BP. 9) Why do covalent substances not conduct electricity? a) The ions are firmly bonded together b) The electrons can only move when dissolved. c) There are no free electrons available as they are being shared between atoms. d) They don't have any protons. 10) Why do covalently bonded substances have low MP and BP? a) The force of attraction between molecules is small. b) The force of attraction between molecules is high. c) There is no force of attraction between molecules. d) The molecules are very large.

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