Honors Chemistry Midterm
Flashcard
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the atomic mass on the periodic table?
Back
The atomic mass is an average of all the isotopes of an element based on their abundance.
2.
FLASHCARD QUESTION
Front
How many bonds will an element form in a covalent compound?
Back
The number of bonds is equal to the number of electrons needed to reach an octet.
3.
FLASHCARD QUESTION
Front
Do Aluminum-27 and an atom with 14 protons and 13 neutrons belong to the same element?
Back
No, because they have different numbers of protons.
4.
FLASHCARD QUESTION
Front
What discovery was made from experiments with cathode rays?
Back
The discovery of electrons.
5.
FLASHCARD QUESTION
Front
Convert 35,400 mg to grams.
Back
35,400 mg = 35.4 g.
6.
FLASHCARD QUESTION
Front
What are isotopes?
Back
Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.
7.
FLASHCARD QUESTION
Front
What is the octet rule?
Back
The octet rule states that atoms tend to form bonds until they are surrounded by eight valence electrons.
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