Question

changes in matter
quiz complete
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a student investigated some properties of lead and recorded the findings in the table below.
which statement is true with respect to the investigation?
○ the student investigated only the physical properties of lead.
○ the student investigated only the chemical properties of lead.
○ the student investigated more physical properties than chemical properties of lead.
○ the student investigated more chemical properties than physical properties of lead.

Explanation:

1. Classify properties:

• Physical properties (measurable/observable without changing lead's identity): color, density, volume of sample, melting point, electrical conductivity (5 total).
• Chemical property (involves a chemical change to form a new substance): reaction with air forming lead oxide (1 total).

1. Compare counts: 5 physical properties > 1 chemical property, so the correct statement is that more physical properties were investigated.

Answer:

The student investigated more physical properties than chemical properties of lead.