Which best describes a compound such as sodium chloride?
A. a pure substance that can be separated into different elements by physical means
B. a mixture of two common substances that can be separated by chemical means
C. a mixture of two common elements that can be separated by physical means
D. a pure substance that can be separated into different elements by chemical means
Answer (1)
Sodium chloride is a pure substance that can only be separated into its components, sodium and chlorine, through chemical means. It distinguishes itself from mixtures, which can be separated by physical methods. Understanding this classification is crucial in chemistry. ;
