
Unit 2 Test Review
Quiz
•
Chemistry
•
9th Grade
•
Easy
Used 18+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is an example of a new substance being formed during a chemical change?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Students combined baking soda and vinegar to demonstrate a chemical reaction. What indicates that a chemical reaction has occurred?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
______________- means written above (Ex: K+, I-)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
_____________ ____________- when an element’s outer energy level is complete (8 electrons in outer level for most elements).
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
______________- the number written after a symbol that tells how many atoms of that element are in a unit of the compound.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The ____ tells you how many electrons an atom must gain, lose, or share to become stable.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a symbol has no subscript, the number ________ is used.
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