02-Fall17-MASON Activities and Due Dates > Final Exam Homework (extra credit tow
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02-Fall17-MASON Activities and Due Dates > Final Exam Homework (extra credit towards HW cat egory) My Assignment Re Attempts Score (D 12/8/2017 10:00 AM 0415 Question 10 of 30 Sapling Learning Map.A Classity these substances. More than one answer may apply in each case compound compound pure substance pure substance hrnogeneous mixture heterogeneous mixture solution heterogeneous mixture Air (mostly N2 and O) element 10450 element compound pure substance pure substance homogeneous mixture heterogeneous mixture 12 0 0 13 0 14 O o 15 0 Previous 7 Sapling Learning,Explanation / Answer
A pure substance is made up of only one component, and its composition is invariant. The components of a pure substance can be individual atoms or groups of atoms joined together.
A mixture is composed of two or more components in proportions that can vary from one sample to another.
If the composition of mixture varies from one region to another, the mixture is called heterogeneous.
If the composition of mixture same throughout, the mixture is called homogeneous.
Element is a substance that cannot be chemically broken down into simpler substances.
Compound is a substance composed of two or more elements.
Solution is a homogeneous mixture of two or more compounds.
N2: It is composed of two N atoms. So, it is a Pure substance.
O2: It is composed of two O atoms.So, it is a pure substance.
N2O: It is composed of two different elements. So, it is a compound and a pure substance.
Air: The composiiton of air does not change from region to region. So, it is a homogeneous mixture and is a solution.
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