What does pure substance mean?
Understand the Problem
The question is asking for the definition and characteristics of a pure substance. A pure substance is a material that has a uniform and unchanging composition, meaning it contains only one type of particle and does not vary in its properties.
Answer
A pure substance has a constant composition and distinct chemical properties and consists of only one type of atom or molecule.
A pure substance is a form of matter that has a constant composition and distinct chemical properties. It is made up of only one type of atom or molecule and cannot be separated into other kinds of matter by physical means.
Answer for screen readers
A pure substance is a form of matter that has a constant composition and distinct chemical properties. It is made up of only one type of atom or molecule and cannot be separated into other kinds of matter by physical means.
More Information
Pure substances can be either elements or compounds, and their uniform composition makes them essential for chemical reactions and studies.
Tips
A common mistake is to confuse a pure substance with a mixture that visually appears homogeneous. Pure substances are chemically uniform.
