PS Midterm
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a single replacement reaction?
Back
A reaction where one element replaces another in a compound, represented by the general formula A + CD → C + AD.
2.
FLASHCARD QUESTION
Front
What is a double replacement reaction?
Back
A reaction where the anions and cations of two different compounds switch places, represented by the general formula AB + CD → CB + AD.
3.
FLASHCARD QUESTION
Front
What is a valence electron?
Back
The number of electrons in the outermost shell of an atom that can participate in forming chemical bonds.
4.
FLASHCARD QUESTION
Front
Back
Double Replacement.
5.
FLASHCARD QUESTION
Front
What is the general formula for a single replacement reaction?
Back
A + CD → C + AD.
6.
FLASHCARD QUESTION
Front
What is the general formula for a double replacement reaction?
Back
AB + CD → CB + AD.
7.
FLASHCARD QUESTION
Front
What is a combination reaction?
Back
A reaction where two or more substances combine to form a single product, represented by A + B → AB.
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