Chemistry Cumulative Exam Review (100%)Questions & Answers 100% Correct!!

Which of these properties is the best one to use for identification of an element? the number of neutrons in the atomic nucleus the number of protons in the atomic nucleus the number of isotopes that are formed by the element the number of charges on ions of the element - ANSWERB. the number of protons in the atomic nucleus Which characteristic best identifies an Arrhenius base? It must donate electrons to form a covalent bond. It must accept protons from an acid. It must generate hydroxide ions in water. It must form a conjugate acid after reacting. - ANSWERC. It must generate hydroxide ions in water. How are isotopes defined? forms of different elements that have the same number of neutrons in each atom forms of different elements that have the same number of protons in each atom forms of the same element that differ in the number of neutrons in each atom forms of the same element that differ in the number of protons in each atom - ANSWERC. forms of the same element that differ in the number of neutrons in each atom According to Le Chatelier's principle, a change in pressure affects the chemical equilibrium of the reaction system under what condition? The reactants and the products are in the solid phase. The reactants and the products are in the liquid phase. Some of the reactants or the products are in the gaseous phase. Some of the reactants or the products are solid, and some are liquid. - ANSWERC. Some of the reactants or the products are in the gaseous phase. Which effect is one likely result of a forest fire? extinction