2024 Phy Sci--Chapter 2 Test Review
Flashcard
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
True/False: Pure substances CAN be separated.
Back
False
2.
FLASHCARD QUESTION
Front
A change that results in the formation of new substances with new properties is called a ________________.
Back
chemical change
3.
FLASHCARD QUESTION
Front
Put 34,500,000 into scientific notation.
Back
3.45 x 10^7
4.
FLASHCARD QUESTION
Front
Which of the following can not be classified as a pure substance? O2, CO2, H2O + NaCl, C12H22O11
Back
H2O + NaCl
5.
FLASHCARD QUESTION
Front
This is a substance that cannot be broken down into simpler substances: compound, mixture, element, atom.
Back
element
6.
FLASHCARD QUESTION
Front
Define a pure substance.
Back
A material that has a constant composition and consistent properties throughout.
7.
FLASHCARD QUESTION
Front
What is a mixture?
Back
A combination of two or more substances that are not chemically bonded.
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