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1pt

Four students are asked to determine whether the following substances are mixtures or pure substances: soil, gold metal, copper wire, and table salt. Their replies are shown in the table.

Which student correctly labeled the substances?

A.
Student L
B.
Student M
C.
Student N
D.
Student O

1 answer

To determine which student correctly labeled the substances as mixtures or pure substances, we need to classify each of the given substances:

  1. Soil - A mixture; it contains various organic and inorganic materials.
  2. Gold metal - A pure substance; it is a single element.
  3. Copper wire - A pure substance; made of copper, which is also a single element.
  4. Table salt (sodium chloride, NaCl) - A pure substance; it is a compound made up of sodium and chlorine in a fixed ratio.

Now, let's summarize the classification:

  • Soil: Mixture
  • Gold metal: Pure substance
  • Copper wire: Pure substance
  • Table salt: Pure substance

Since I do not have access to the replies of students L, M, N, and O, I cannot definitively say which student labeled them correctly without the respective answers listed in the table. Please provide the labeling from the students, and I can help determine which student is correct.