Fall Benchmark Exam Review
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Easy
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the atomic number of an element?
Back
The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.
2.
FLASHCARD QUESTION
Front
How do you calculate the number of neutrons in an atom?
Back
Number of neutrons = Mass number - Atomic number.
3.
FLASHCARD QUESTION
Front
What is percent error and how is it calculated?
Back
Percent error is a measure of how inaccurate a measurement is, calculated as: Percent Error = |(Accepted Value - Experimental Value)| / Accepted Value x 100%.
4.
FLASHCARD QUESTION
Front
What is a homogeneous mixture?
Back
A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater or air.
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
What is the electron configuration of an atom?
Back
The electron configuration describes the distribution of electrons in an atom's orbitals.
7.
FLASHCARD QUESTION
Front
What is the significance of the periodic table?
Back
The periodic table organizes elements based on their atomic number, electron configurations, and recurring chemical properties.
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