A student wrote a table comparing pure substances and mixtures.
Pure Substances
- elements and compounds
- cannot be separated using physical means
Mixtures
- contains two or more substances
- are chemically combined
The student made a mistake on their table. Which statement BEST describes the mistake made?
A. Elements and compounds are considered mixtures.
B. Mixtures contain at least three or more substances.
C. Pure substances can be separated using physical means.
D. Mixtures are substances that are not chemically combined.