1 o V= 7L V= 7L V= 7L T= 700K P= ? V= 7L T= 100K P= ? T= 500K T= 300K P= ? P= ? Note: Each "dot" represents one gas particle. a. What variables are held constant? volume b. Which container do the particles have the most KE? 2 3 4 1 c. Which container has the lowest temperature? 1 4 d. Which container has the lowest pressure? 1 4. e. Which container has the highest pressure? 1 2 3 4. f. What gas law does the above relationship represent? What kind of relationship does this represent(direct or indirect)? 3. 3. 2) ○ の

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Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.