Stoichiometry 11#Ionic Compounds11Choose the best answerWhy is formula mass used for NaCl instead of molecular mass?ANaCl has a very high massBNaCl exists only in the solid stateCNaCl forms an ionic lattice instead of separate moleculesDSodium is a metal Like 0 Discuss 0Share
Stoichiometry 11#Avogadro's Number12Choose the best answerIf one mole were defined as 6.022 × 10²⁰ particles instead of 6.022 × 10²³ particles, which quantity would change?AThe definition of mass in gramsBThe mass of one mole of carbonCThe stoichiometric ratio in a balanced equationDThe ratio of elements in a compound Like 0 Discuss 0Share
Stoichiometry 11#Mole Concept13Choose the best answerAtom X has a mass of 2 u and atom Y has a mass of 16 u. Which comparison is correct?AOne atom of Y is 8 times heavier than one atom of XBOne mole of Y is 8 times heavier than one mole of XCBoth A and BDNeither A nor B Like 0 Discuss 0Share
Stoichiometry 11#Atomic Structure#Isotopes14Choose the best answerHow is atomic mass in amu related to natural isotopes?Aamu ignores isotopes.Bamu depends on only one isotope of each element.CAtomic mass in amu reflects the weighted contribution of all naturally occurring isotopes.Damu is calculated using only neutrons. Like 0 Discuss 0Share
Stoichiometry 11#Physical and Chemical Changes15Choose the best answerWhich option represents a chemical change?ATwinkling of starsBCooking of vegetablesCCutting of fruitsDBoiling of water Like 0 Discuss 0Share