
Chemistry A Unit 4 Practice Test
Flashcard
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Elements in the same column of the periodic table have the same number of ______.
Back
Valence Electrons
2.
FLASHCARD QUESTION
Front
If an atom gains two electrons, what charge will it have?
Back
-2
3.
FLASHCARD QUESTION
Front
When ice melts to water, energy is ___ and the process is ___.
Back
absorbed; endothermic
4.
FLASHCARD QUESTION
Front
Granite is an igneous rock that contains minerals like quartz and feldspar. Granite is a(n) _______.
Back
heterogeneous mixture
5.
FLASHCARD QUESTION
Front
Dry ice is solid carbon dioxide (CO2). Dry ice is a ___________________.
Back
compound
6.
FLASHCARD QUESTION
Front
What is the definition of a compound?
Back
A substance formed when two or more elements are chemically bonded together.
7.
FLASHCARD QUESTION
Front
What is the definition of a heterogeneous mixture?
Back
A mixture in which the composition is not uniform throughout.
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