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Questions and Answers
What is a compound?
What is a compound?
- An individual element
- A mixture of compounds
- A mixture of elements
- A substance made of two or more elements chemically bonded (correct)
What is a mixture of elements?
What is a mixture of elements?
- A combination of elements that are not chemically bonded (correct)
- A mixture of compounds
- An element
- A compound
What is a mixture of elements and compounds?
What is a mixture of elements and compounds?
- A compound
- An element
- A heterogeneous mixture containing both elements and compounds (correct)
- A homogeneous mixture
What is a mixture of compounds?
What is a mixture of compounds?
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What is an element?
What is an element?
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Study Notes
Elements, Compounds, and Mixtures
- Element: A pure substance that cannot be broken down into simpler substances by chemical means. Examples include hydrogen, oxygen, and gold.
- Compound: A substance formed when two or more elements chemically bond together. Compounds have specific ratios and properties, such as water (H2O) and carbon dioxide (CO2).
- Mixture of Elements: A physical combination of two or more elements where each retains its properties. Examples include air (a mixture of gases) and alloyed metals.
- Mixture of Compounds: A combination of two or more compounds that do not react chemically. Examples include salty water and sugar solutions.
- Mixture of Elements and Compounds: A composite material containing both elements and compounds, such as a salad containing vegetables (elements) and dressing (compound).
- Types of Mixtures: Can be homogeneous (uniform composition) like salts dissolved in water or heterogeneous (distinct components) like sand mixed with iron filings.
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