1) The type of elements that normally form covalent bonds are... a) Metals b) Non metals c) Metals and non metals 2) A covalent bond is... a) Two non metal atoms joined covalently b) An attraction between shared electrons and positive nuclei c) Shared electrons d) when atoms become stable 3) Why do atoms form covalent bonds? a) To share electrons b) To gain a full outer shell and become stable c) To join with other atoms d) To form compounds 4) Name the two types of covalent structure? a) Molecule and network b) Lattice and molecule c) Network and lattice d) Network and diatomic 5) Which elements are monatomic? a) Halogens b) Non metals c) Noble gases d) All gases 6) What does monatomic mean? a) Single atoms b) Atoms covalently bonded c) Elements that are gases d) Only one element 7) Why do the noble gases not bond? a) They don't have electrons b) They are gases c) They are monatomic d) They have a full shell and are stable 8) What is a molecule? a) A diatomic structure b) When two non metal atoms are covalently bonded c) When a metal and a non metal atom are covelently bonded d) The attraction between the shared electrons and the positive nuclei 9) What is a diatomic molecule? a) 2 atoms joined covalently b) 2 elements joined covalently c) Metala and a non metal joined covalently 10) True or false: oxygen is diatomic a) True b) False 11) True or false: sodium is diatomic a) True b) False 12) True or false: nitrogen is diatomic a) True b) False 13) True or false: chlorine is diatomic a) True b) False 14) True or false: carbon is diatomic a) True b) False 15) True or false: CO (carbon monoxide) is diatomic a) True b) False 16) True or false: NH3 (ammonia) is diatomic. a) True b) False 17) True or false: HF (hydrogen fluoride) is diatomic. a) True b) False 18) True or false: CH4 (methane) is diatomic. a) True b) False 19) True or false: Helium is diatomic. a) True b) False 20) True or false: Hydrogen is diatomic. a) True b) False

Nat 5 Covalent Basics Quiz

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