What is a pure substance?
Pure substances and Mixtures

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•
Chemistry
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A pure substance is a type of matter that has a uniform and definite composition. It can be an element or a compound.
2.
FLASHCARD QUESTION
Front
How is an element defined in chemistry?
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.
3.
FLASHCARD QUESTION
Front
What is a mixture?
Back
A mixture is a combination of two or more substances where each substance retains its own properties. Mixtures can be homogeneous or heterogeneous.
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.
5.
FLASHCARD QUESTION
Front
Can you give an example of a homogeneous mixture?
Back
Coffee with milk and sugar is a good example of a homogeneous mixture.
6.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is a substance formed when two or more different types of atoms chemically bond together.
7.
FLASHCARD QUESTION
Front
How is salt classified in terms of matter?
Back
Salt is classified as a compound because it is made of sodium and chlorine atoms that are chemically bonded.
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