School Improvement in Maryland

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Standard 4.0 Chemistry

Topic D. Physical and Chemical Changes

Indicator 1. Cite evidence to support the fact that some substances can be separated into the original substances from which they were made.

Objective a. Investigate and identify ways to describe and classify mixtures using the observable and measurable properties of their components.

Selected Response Item

During an investigation, students were given chemical data for several common household products, as shown in the data table below. Students were to determine if a substance was an acid or base by using litmus paper. Litmus paper turns red in an acid and turns blue in a base.

Question Image

Which physical property best classifies vinegar in a separate group of substances from oven cleaner?

  1. boiling point
  2. melting point
  3. color of solution
  4. solubility in water
/share/assessment_items/xml/items/msa_science_6_022.xml

Correct Answer:
A