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Which sample can be classified as a substance?

Mayya Alocci
Apr 25, 2024
1 min read

Updated: May 28, 2024

NY Regents Chemistry Exam August 2023 Question 14

14 Which sample can be classified as a substance?

(1) air

(2) argon

(3) soil

(4) seawater

Solution: A substance is either an element or a compound (fixed ratio of atoms such as CO2). Elements can be found on the Periodic Table. Argon is the only element listed and is the correct answer choice (2).

Soil, seawater and air are all mixtures because they are composed of multiple substances.

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