Elements, Compounds and Mixtures
Flashcard
•
Science
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an element?
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 elements chemically bond together in a fixed ratio.
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 is a homogeneous mixture?
Back
A homogeneous mixture is a mixture that has a uniform composition throughout, meaning the different components are evenly distributed.
5.
FLASHCARD QUESTION
Front
What is a heterogeneous mixture?
Back
A heterogeneous mixture is a mixture where the components are not uniformly distributed, and different parts can be seen and separated.
6.
FLASHCARD QUESTION
Front
What happens when elements form a compound?
Back
When elements form a compound, chemical bonds are created between the atoms of the elements.
7.
FLASHCARD QUESTION
Front
What is a chemical bond?
Back
A chemical bond is the force that holds atoms together in a compound, which can be ionic or covalent.
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