Fall Semester Exam Review (test grade)
Flashcard
•
Science
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the electron configuration for an atom with 8 electrons?
Back
1s² 2s² 2p⁴.
2.
FLASHCARD QUESTION
Front
How many total electrons are in an atom with the configuration 1s² 2s² 2p⁴?
Back
8 electrons.
3.
FLASHCARD QUESTION
Front
What is the process of rounding a number to significant figures?
Back
Rounding involves adjusting a number to a specified number of digits that carry meaning contributing to its precision.
4.
FLASHCARD QUESTION
Front
Round the number 1047.78 to three significant figures.
Back
1050.
5.
FLASHCARD QUESTION
Front
What is the mass number of an atom?
Back
The mass number is the total number of protons and neutrons in the nucleus of an atom.
6.
FLASHCARD QUESTION
Front
If an atom has 10 protons and 15 neutrons, what is its mass number?
Back
25.
7.
FLASHCARD QUESTION
Front
What are transition elements?
Back
Transition elements are the metallic elements found in groups 3-12 of the periodic table, known for their ability to form variable oxidation states.
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