How do mixtures and substances differ?
Understand the Problem
The question is asking about the distinctions between mixtures and substances. It seeks to clarify the characteristics that set these two categories apart in chemistry.
Answer
Pure substances have a constant composition, while mixtures are combinations of elements or compounds without a fixed composition.
Pure substances have a constant composition and properties, consisting of a single element or compound. Mixtures are physical combinations of two or more elements and/or compounds and do not have a constant composition.
Answer for screen readers
Pure substances have a constant composition and properties, consisting of a single element or compound. Mixtures are physical combinations of two or more elements and/or compounds and do not have a constant composition.
More Information
Pure substances are further categorized into elements and compounds, and they can only be separated into simpler substances through chemical reactions. Mixtures, on the other hand, can be separated by physical methods.
Tips
One common mistake is confusing the terms homogeneous and heterogeneous; homogeneous mixtures have a uniform composition, while heterogeneous mixtures do not.
Sources
- 3.05: Pure Substances and Mixtures - Chemistry LibreTexts - chem.libretexts.org
- How do mixtures differ from pure substances? - Socratic - socratic.org
- Difference Between Pure Substance And Mixture - BYJU'S - byjus.com
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