What is a compound?
8th 2nd Quarter Nine Weeks Review 24

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•
Physics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A compound is a substance formed when two or more elements are chemically bonded together.
2.
FLASHCARD QUESTION
Front
Which of the following is not a compound: HCl, Cl, NaCl, CO2?
Back
Cl is not a compound; it is an element.
3.
FLASHCARD QUESTION
Front
What is the function of the ozone layer?
Back
The ozone layer blocks ultraviolet radiation from the sun.
4.
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.
5.
FLASHCARD QUESTION
Front
What type of information does Perseverance NOT send back to Earth?
Back
Perseverance does not send back actual rock samples.
6.
FLASHCARD QUESTION
Front
In which layer of the atmosphere does weather occur?
Back
Weather occurs in the troposphere.
7.
FLASHCARD QUESTION
Front
What is a pure substance?
Back
A pure substance is a material that has a constant composition and consistent properties throughout.
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