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Questions and Answers
What is an element?
What is an element?
- A combination of substances that are chemically bonded
- A substance that cannot be separated into anything simpler (correct)
- A substance made of atoms with different numbers of protons
- A pure substance made up of two or more chemically combined elements
Which statement describes a compound?
Which statement describes a compound?
- It can be easily separated into its components by physical means
- It consists of only one type of atom
- It is a mixture of substances that retain their individual properties
- It is made up of two or more elements that are chemically combined (correct)
Which of the following is an example of a mixture?
Which of the following is an example of a mixture?
- Copper(II) sulfate (CuSO4)
- Sand and water (correct)
- Calcium carbonate (CaCO3)
- Carbon dioxide (CO2)
What characterizes a mixture?
What characterizes a mixture?
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How many elements are found in the Periodic Table?
How many elements are found in the Periodic Table?
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What is true about a compound?
What is true about a compound?
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Which of the following can be used to separate mixtures?
Which of the following can be used to separate mixtures?
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What defines a pure substance?
What defines a pure substance?
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Which of the following pairs represents compounds?
Which of the following pairs represents compounds?
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Which scenario illustrates a compound?
Which scenario illustrates a compound?
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Study Notes
Elements, Compounds & Mixtures
- All substances can be categorized into elements, compounds, or mixtures.
- Elements are made up of atoms with the same number of protons and cannot be broken down further.
- There are 118 known elements organized in the Periodic Table.
- Compounds are formed by chemically combining two or more elements.
- There is an unlimited number of possible compounds.
- Compounds cannot be separated into their constituent elements by physical methods.
- Examples of compounds include copper(II) sulfate (CuSO4), calcium carbonate (CaCO3), and carbon dioxide (CO2).
- Mixtures are combinations of two or more substances (elements and/or compounds) that are not chemically bonded.
- Mixtures can be separated using physical methods like filtration or evaporation.
- Examples of mixtures include sand and water, oil and water, and sulfur powder and iron filings.
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Description
Test your knowledge on the classifications of matter in this quiz covering elements, compounds, and mixtures. Learn about their properties, differences, and examples. Perfect for students studying chemistry concepts.
