1 Which type of bond is formed by the transfer of electrons from a metal atom to a non-metal atom? A Covalent bond B Ionic bond C Coordinate covalent bond D Metallic bond
3 Hydrogen bonding occurs when hydrogen is bonded to: A Carbon, nitrogen, or oxygen B Fluorine, oxygen, or nitrogen C Chlorine, bromine, or iodine D Any metal
4 The bond formed between two chlorine atoms in Cl2 molecule is: A Ionic B Covalent C Coordinate covalent D Metallic
5 Which property of metals is due to the mobility of delocalized electrons? A Malleability B Ductility C Electrical conductivity D High melting point
6 An ionic bond is formed when: A Two atoms share a pair of electrons B One atom donates a lone pair to another atom C Electrons are transferred from one atom to another D Metal ions are surrounded by a sea of electrons
7 Which of the following is an electropositive character of metals? A Tendency to gain electrons B Tendency to lose electrons and form cations C Tendency to form anions D Tendency to share electrons equally
8 The sea of delocalised electrons is a characteristic of: A Ionic compounds B Covalent compounds C Metallic bonds D Coordinate covalent bonds
9 Which intermolecular force is the strongest? A London dispersion forces B Dipole-dipole forces C Hydrogen bonding D Ion-dipole forces
10 Which of the following substances is likely to have a giant covalent structure? A Sodium chloride B Diamond C Water D Carbon dioxide
11 Which of the following is a giant covalent structure? A Sodium chloride B Diamond C Water D Carbon dioxide
12 In a coordinate covalent bond, the shared pair of electrons is provided by: A Both atoms equally B One atom only C A metal ion D A delocalised electron
13 Electronegativity generally increases across a period because: A Atomic size increases B Nuclear charge increases C Number of shells increases D Metallic character increases
14 Which of the following correctly describes the trend in electropositive character of metals? A It decreases down a group and increases across a period B It increases down a group and decreases across a period C It remains constant across a period D It increases across a period and decreases down a group
15 Which type of bond is formed by the complete transfer of electrons from a metal atom to a non-metal atom? A Covalent bond B Ionic bond C Coordinate covalent bond D Metallic bond
16 Why do atoms form chemical bonds? A To increase their atomic number B To achieve a stable electron configuration C To become radioactive D To change their mass number
17 Which pair of elements is most likely to form an ionic bond? A Two non-metals B Two metals C A metal and a non-metal D Two noble gases
18 Which of the following molecules can form hydrogen bonds? A Methane (CH4) B Ammonia (NH3) C Carbon dioxide (CO2) D Chlorine (Cl2)
19 Ionic compounds generally have: A Low melting points B High melting points C Poor solubility in water D Conduct electricity in solid state
20 Which of the following elements has the highest electronegativity? A Sodium B Chlorine C Fluorine D Oxygen
21 Which type of bond is formed when one atom donates a lone pair of electrons to another atom that has an empty orbital? A Ionic bond B Covalent bond C Coordinate covalent bond D Metallic bond
22 Electronegativity is the tendency of an atom to: A Lose electrons B Gain electrons C Attract shared electrons towards itself D Donate a lone pair of electrons
23 Which rule states that atoms tend to have eight electrons in their valence shell? A Duplet rule B Octet rule C Triplet rule D Valence rule
24 In a metallic bond, the positively charged metal ions are surrounded by a sea of: A Protons B Neutrons C Delocalised electrons D Anions
25 Which type of solid is diamond? A Ionic solid B Simple molecular solid C Giant covalent solid D Metallic solid