Chem 103 exam 1 Ch 1-3 Prelec/hw with 100% complete solutions
A uniform combination of two or more pure substances can be classified as _____. correct answersa homogeneous mixture Which of these pure substances is an element? - C12H22O11 (sucrose, table sugar) - O2 - CH4 (methane, the primary component of natural gas) - NH3 (ammonia, a component of fertilizer) correct answersO2 Based on the organization of the periodic table, periods _____. correct answersare the horizontal rows To which group and period does potassium belong? correct answers1A, 4 In any measurement, the digits known with certainty plus one estimated digit are called _____. correct answerssignificant digits
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chem 103 exam 1 ch 1 3 prelechw
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