Chemistry Homework-ch1

Chemistry Homework-ch1 - Chemistry a molecular approach...

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Chemistry a molecular approach - Nivaldo J Tro Problems by Topic : Chapter 1 1.34. Classify each of the following as an observation, a law, or a theory? a) Chlorine is a highly reactive gas - Observation b) If elements are listed in order of increasing mass of their atoms, their chemical reactivity follows a repeating pattern - Law c) Neon is an inert (or nonreactive) gas.- Observation d) The reactivity of elements depends on the arrangement of their electrons.-Theory 1.40. Complete the following table a) Coffee – mixture homogeneous b) Ice – pure, compound c) Carbon – pure, element 1.42. Classify each of the following molecular diagrams a) Pure substance – element b) Mixture – heterogeneous c) Pure substance – compound d) Pure substance – compound 1.44. Which are physical and which are chemical? a) Bluish color – physical b) Pungent odor- physical c) Very reactive- chemical d) Decomposes on exposure to ultraviolet light- chemical e) Gas at room temperature – physical
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Chemistry Homework-ch1 - Chemistry a molecular approach...

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