IEB Matric Chemistry Definitions TEST QUIZ with Verified Answers 2023/2024

IEB Matric Chemistry Definitions TEST QUIZ with Verified Answers 2023/2024 Molar mass correct answers The mass in grams of one mole of that substance Mole correct answers the SI unit for the amount of substance that contains as many particles of that substance as there are atoms in 12g of carbon 12. Solute correct answers The substance that is dissolved in the solution Solvent correct answers The substance in which another substance is dissolved, forming a solution Solution correct answers homogenous mixture of solute and solvent Standard solution correct answers one with a concentration that is known precisely and remains stable for a useful length of time. Concentration correct answers The number of moles of solute per unit volume of solution Intramolecular bond correct answers an intramolecular bond is a bond that occurs between atoms within molecules Electronegativity correct answers Measure of the tendency of an atom to attract a bonding pair of electrons Covalent bond correct answers A sharing of at least one pair of electrons between two non-metal atoms Non-polar covalent (pure covalent) correct answers the equal sharing of electrons Polar covalent correct answers Unequal sharing of electrons leading to a dipole forming (as a result of electronegativity difference) Ionic bond correct answers A transfer of electrons and subsequent electrostatic attraction Metallic bonding correct answers Bonds between a positive kernel and a sea of delocalized electrons Chemical bonds correct answers forces of attraction that hold atoms, ions and molecules together Bond energy correct answers the energy required to completely separate two covalently bonded atoms Bond length correct answers the distance between the nuclei of two covalently bonded atoms Dative covalent bond correct answers bond formed by the overlapping of orbitals and the sharing of electrons, both belonging to a single atom Ion correct answers spherical particle with a concentrated charge at the centre Intermolecular force correct answers Weak force of attraction between atoms, ions and molecules of noble gases Viscosity correct answers the resistance of a liquid to flow