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Questions and Answers
What term is used to describe a substance that cannot be broken down into simpler substances by chemical means?
What term is used to describe a substance that cannot be broken down into simpler substances by chemical means?
- Element (correct)
- Solution
- Compound
- Mixture
Which term describes a substance that consists of two or more different elements bonded together?
Which term describes a substance that consists of two or more different elements bonded together?
- Pure substance
- Element
- Compound (correct)
- Solvent
Which of the following best describes a heterogeneous mixture?
Which of the following best describes a heterogeneous mixture?
- Uniform composition throughout
- Contains visible parts that can be separated (correct)
- The same chemical composition in all samples
- Single phase at a molecular level
Which term refers to a mixture where one substance is dissolved in another?
Which term refers to a mixture where one substance is dissolved in another?
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What term is used to describe a substance that is dissolved in a liquid?
What term is used to describe a substance that is dissolved in a liquid?
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Study Notes
Key Chemical Terms
- Element: A fundamental substance that cannot be broken down into simpler substances using chemical reactions. Elements are the basic building blocks of matter.
- Compound: A substance formed when two or more different elements chemically bond together in a fixed ratio, exhibiting unique properties different from its constituent elements.
Mixtures
- Heterogeneous Mixture: A type of mixture where the components can be visibly distinguished and are not uniformly distributed. Examples include salad and oil-water mixtures.
- Solution: A homogeneous mixture where one substance (the solute) is completely dissolved in another (the solvent), resulting in a uniform composition throughout.
Additional Concepts
- Solute: The substance that is dissolved in a fluid (solvent) to form a solution. Examples include salt in water or sugar in tea.
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