
Chemistry Bell Ringer for 3/18/25
Flashcard
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
How many electrons should sodium, atomic number 11, have around its Lewis dot diagram?
Back
Sodium has 1 electron in its outer shell, represented in the Lewis dot diagram.
2.
FLASHCARD QUESTION
Front
What are metalloids?
Back
Metalloids are elements that have properties of both metals and nonmetals. An example is arsenic.
3.
FLASHCARD QUESTION
Front
How many protons does titanium have?
Back
Titanium has 22 protons.
4.
FLASHCARD QUESTION
Front
What is an isotope?
Back
Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.
5.
FLASHCARD QUESTION
Front
Which isotope contains 12 protons and 13 neutrons?
Back
The isotope is Magnesium-25 (Mg-25).
6.
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.
7.
FLASHCARD QUESTION
Front
Define Lewis dot structure.
Back
A Lewis dot structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist.
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