Which statement is FALSE? O A pure substance can be varied by changing the proportion of pure substances making it up A mixture can be separated into 2 or more substances by physical or mechanical means A pure substance had properties that are constant, no matter where you find it A pure substance has constant chemical composition A mixture's composition can be varied by changing the proportion of pure substances making it up

Which statement is FALSE? O A pure substance can be varied by changing the proportion of pure substances making it up A mixture can be separated into 2 or more substances by physical or mechanical means A pure substance had properties that are constant, no matter where you find it A pure substance has constant chemical composition A mixture's composition can be varied by changing the proportion of pure substances making it up

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter3: Matter

Section: Chapter Questions

Problem 10QAP: ¡n a sample of a gaseous substance, more than 99% of the overall volume of the sample is empty...

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Similar questions

Sketch a magnified view (showing atoms and/or molecules) of each of the following, and explain why the specified type of mixture is a heterogeneous mixture of two different compounds. a homogeneous mixture of an element and a compound.
¡n a sample of a gaseous substance, more than 99% of the overall volume of the sample is empty space. How is this fact reflected in the properties of a gaseous substance compared with the properties of a liquid or solid substance?
Which of the following is not characteristic of a pure substance? (a) Has a uniform composition throughout (b) Has a fixed melting temperature (c) Can be separated into two other pure substances
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1f a piece of hard, white blackboard chalk is heated strongly in a flame, the mass of the piece of chalk will decrease, and eventually the chalk will crumble into a white dust. Does this change suggest that the chalk is composed of an element or a compound?
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a Which of the following substances would you expect to be elements and which would you expect to be compounds? 1 calcium carbonate; 2 arsenic; 3 uranium; 4 potassium chloride; 5 chloromethane. b On what general rule do you base your answers to part a? Can you name any exceptions to this general rule?
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Describe how a homogeneous mixture differs from a heterogeneous mixture.