What is the definition of an element?
Elements, Compounds, Mixtures PICTURES

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Science
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6th - 7th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.
2.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is a substance formed when two or more different elements are chemically bonded together.
3.
FLASHCARD QUESTION
Front
What is a mixture?
Back
A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.
4.
FLASHCARD QUESTION
Front
What distinguishes a homogeneous mixture from a heterogeneous mixture?
Back
A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has a non-uniform composition with distinct phases.
5.
FLASHCARD QUESTION
Front
Can a mixture be classified as a compound? Why or why not?
Back
No, a mixture cannot be classified as a compound because a mixture consists of two or more substances that are not chemically bonded, whereas a compound is made up of elements that are chemically bonded.
6.
FLASHCARD QUESTION
Front
What is an example of a mixture of elements?
Back
An example of a mixture of elements is air, which contains various gases like nitrogen, oxygen, and carbon dioxide.
7.
FLASHCARD QUESTION
Front
What is an example of a mixture of compounds?
Back
An example of a mixture of compounds is saltwater, which contains dissolved sodium chloride (a compound) in water (another compound).
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