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Thomas Edison State CollegeGeneral Chemistry I with Labs (CHE-121)Section no.:OL009Semester and year: Feb. /2015Written Assignment 1: Introduction and MeasurementAnswer all assigned questions and problems, and show all work.1.Do the following statements describe chemical or physical properties? (10 points)a.Oxygen gas supports combustion.b.Fertilizers help to increase agricultural production.c.Water boils below 100°C on top of a mountain.d.Lead is denser than aluminum. Physical propertye.Uranium is a radioactive element. Chemical property2.Classify each of the following as an element, a compound, a homogeneous mixture, or a heterogeneous mixture: (7 points)a.water from a well:A homogeneous mixtureb.argon gas: An elementc.sucrose: A compoundd.air:A homogeneous mixturee.dirt: A heterogeneous mixturef.a rusty iron nail: A heterogeneous mixtureg.ozone: A compound
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Chemistry,Chemical substance,Chemical compound,Thomas Edison State College