Bohnert Chapter 4 test review
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an ion?
Back
An ion is an atom that has gained or lost electrons.
2.
FLASHCARD QUESTION
Front
How many electrons are in each covalent bond?
Back
Each covalent bond has 2 electrons.
3.
FLASHCARD QUESTION
Front
True or False: An atom with two electrons in its outer energy level will gain two electrons to become more chemically stable.
Back
False. It will lose or share electrons to achieve stability.
4.
FLASHCARD QUESTION
Front
Why do noble gases not form compounds with other atoms naturally?
Back
Because their outer energy level has eight electrons.
5.
FLASHCARD QUESTION
Front
What is the chemical formula for ethanol?
Back
C2H6O.
6.
FLASHCARD QUESTION
Front
What is the charge of a positively charged ion?
Back
A positively charged ion is called a cation.
7.
FLASHCARD QUESTION
Front
What is the charge of a negatively charged ion?
Back
A negatively charged ion is called an anion.
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