What are valence electrons?
Chemistry Final

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•
Science
•
10th Grade
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
Back
Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.
2.
FLASHCARD QUESTION
Front
How many valence electrons does magnesium have?
Back
Magnesium has 2 valence electrons.
3.
FLASHCARD QUESTION
Front
What is the chemical formula for water?
Back
The chemical formula for water is H2O, which indicates it contains 2 hydrogen atoms and 1 oxygen atom.
4.
FLASHCARD QUESTION
Front
How many atoms of oxygen are in 8 molecules of water?
Back
There are 16 atoms of oxygen in 8 molecules of water (8 H2O = 8 x 2 = 16 O).
5.
FLASHCARD QUESTION
Front
What is a single replacement reaction?
Back
A single replacement reaction is a type of chemical reaction where one element replaces another in a compound.
6.
FLASHCARD QUESTION
Front
Classify the reaction: A + BC → B + AC.
Back
This is a single replacement reaction.
7.
FLASHCARD QUESTION
Front
What particles are found in the nucleus of an atom?
Back
Protons and neutrons are found in the nucleus of an atom.
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