
Elements, Compounds, Types of Mixtures
Flashcard
•
Science
•
6th - 8th Grade
•
Practice Problem
•
Hard
Wayground Content
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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. Examples include hydrogen, oxygen, and gold.
2.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is a substance formed when two or more elements chemically bond together. Examples include water (H2O) and carbon dioxide (CO2).
3.
FLASHCARD QUESTION
Front
What is a mixture?
Back
A mixture is a combination of two or more substances that are not chemically bonded. Mixtures can be homogeneous or heterogeneous.
4.
FLASHCARD QUESTION
Front
What is a homogeneous mixture?
Back
A homogeneous mixture is a mixture that has a uniform composition throughout. Examples include salt water and air.
5.
FLASHCARD QUESTION
Front
What is a heterogeneous mixture?
Back
A heterogeneous mixture is a mixture that does not have a uniform composition. Examples include salad and sand in water.
6.
FLASHCARD QUESTION
Front
What is the difference between a pure substance and a mixture?
Back
A pure substance has a constant composition and distinct properties, while a mixture contains two or more substances that retain their individual properties.
7.
FLASHCARD QUESTION
Front
What type of mixture is salt water?
Back
Salt water is a homogeneous mixture because the salt is evenly distributed throughout the water.
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