Answer:
b It was a compound.
Explanation:
A chemical reaction was used to separate a sample into its components. What conclusion about the sample can be formed based on the technique used?
a It was a pure substance. NO. If the pure substance is a compound, this option could be. However, if the pure substance is a simple substance, it could not be separated into its components.
b It was a compound.
YES. Compounds can be separated into pure substances using chemical reactions. For instance, H₂O → H₂ + 1/2 O₂
c It was a heterogeneous mixture. NO. Heterogeneous mixtures can be separated into homogeneous mixtures using physical processes such as sieving, filtration, etc.
d It was a homogeneous mixture. NO. Homogeneous mixtures can be separated into pure substances using physical processes such as distillation, chromatography, etc.
