Physical Science Final Exam
Flashcard
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the independent variable in an experiment?
Back
The variable that changes.
2.
FLASHCARD QUESTION
Front
Which category of elements typically forms positive ions?
Back
Metals.
3.
FLASHCARD QUESTION
Front
What is the charge of an aluminum ion with 13 protons and 10 electrons?
Back
3+.
4.
FLASHCARD QUESTION
Front
How do you calculate the mass number of an atom?
Back
Mass number = Protons + Neutrons.
5.
FLASHCARD QUESTION
Front
What is the mass number of an ion with 83 protons, 80 electrons, and 126 neutrons?
Back
209.
6.
FLASHCARD QUESTION
Front
What do acids begin with?
Back
H+.
7.
FLASHCARD QUESTION
Front
What do bases end with?
Back
OH-.
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