Unit 1 Half Point Review
Flashcard
•
Science
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is a substance formed when two or more elements are chemically bonded together.
2.
FLASHCARD QUESTION
Front
What is an example of a pure substance?
Back
Diamond is an example of a pure substance.
3.
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 not distinguishable.
4.
FLASHCARD QUESTION
Front
What is surface tension?
Back
Surface tension is the property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules.
5.
FLASHCARD QUESTION
Front
How does surface tension allow insects to walk on water?
Back
Surface tension creates a film on the water surface that can support small weights, allowing insects like water striders to walk on it.
6.
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.
7.
FLASHCARD QUESTION
Front
How many elements are in the periodic table?
Back
As of now, there are 118 confirmed elements in the periodic table.
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