A- A sample of gasoline contains various hydrocarbons, which comprise atoms of c

Question

A- A sample of gasoline contains various hydrocarbons, which comprise atoms of carbon, hydrogen, and oxygen. The hydrocarbons mix together uniformly to form gasoline.
Which term or terms could be used to describe this sample of gasoline?

mixture
heterogeneous mixture
homogenous mixture
solution
pure chemical substance
compound
element

B- A sample of concrete contains cement, gravel, crushed rocks, sand, and water. Each of these contains different metals and minerals and hence has different colors and different properties.
Which term or terms could be used to describe this sample of concrete?

mixture
heterogeneous mixture
homogenous mixture
solution
pure chemical substance
compound
element

C- A glass jar contains pure sodium chloride.
Which term or terms could be used to describe the contents of this glass jar?

mixture
heterogeneous mixture
homogenous mixture
solution
pure chemical substance
compound
element

The answers maybe have more then one.

Explanation / Answer

A) mixture, homogeneous mixture, solution

C) pure chemical substance; compound

(These are the answers I checked in MasteringChemistry and I got it right)

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