Questions and Answers
Which of the following best describes the components of a mixture?
They are physically combined and retain their individual properties.
Which of the following best describes pure substances?
They consist of only one type of substance.
Which of the following is true about physical properties of a mixture?
They can be observed or measured without changing the composition of the mixture.
Which of the following is an example of a pure substance?
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Which of the following is true about components and substances?
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Study Notes
Mixture Components
- A mixture is composed of two or more different substances, each retaining its chemical properties.
Pure Substances
- A pure substance has a uniform composition and fixed properties, and it can be either an element or a compound.
Physical Properties of Mixtures
- The physical properties of a mixture, such as color, odor, or melting point, are a combination of the properties of its components.
Pure Substance Examples
- Examples of pure substances include water (H2O), salt (NaCl), and sugar (C6H12O6), which have fixed compositions and properties.
Components and Substances
- The components of a mixture can be separated by physical means, such as filtration or sedimentation, whereas the components of a pure substance cannot be separated by physical means.
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