

Pure Substances and Mixtures
Flashcard
•
Chemistry
•
KG - University
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a pure substance?
Back
A pure substance is a material that has a constant composition and consistent properties throughout. It can be an element or a compound.
2.
FLASHCARD QUESTION
Front
What is a mixture?
Back
A mixture is a combination of two or more substances where each retains its own properties. Mixtures can be homogeneous or heterogeneous.
3.
FLASHCARD QUESTION
Front
What is the difference between a homogeneous mixture and a heterogeneous mixture?
Back
A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has a non-uniform composition with distinct phases.
4.
FLASHCARD QUESTION
Front
What is an example of a heterogeneous mixture?
Back
Soil is an example of a heterogeneous mixture, as it contains different components like sand, clay, and organic matter.
5.
FLASHCARD QUESTION
Front
What is an example of a homogeneous mixture?
Back
Saltwater is an example of a homogeneous mixture, as the salt is completely dissolved in the water, creating a uniform solution.
6.
FLASHCARD QUESTION
Front
What is the process of evaporation?
Back
Evaporation is the process of turning a liquid into vapor, typically by heating, which leaves behind any dissolved solids.
7.
FLASHCARD QUESTION
Front
What is a bar magnet used for in separation techniques?
Back
A bar magnet is used to separate magnetic materials, such as iron filings, from non-magnetic materials, like sand.
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