1st Semester Final Practice
Flashcard
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Why is the mole used when measuring the atom?
Back
Atoms are extremely tiny particles, and need extremely large quantities to be made visible.
2.
FLASHCARD QUESTION
Front
How many moles of copper are 4.57 x 10^13 atoms of copper?
Back
7.59 x 10^-11 moles
3.
FLASHCARD QUESTION
Front
F ionizes to a charge of ________.
Back
-1
4.
FLASHCARD QUESTION
Front
What is the chemical name for AgF?
Back
silver fluoride
5.
FLASHCARD QUESTION
Front
As you move across the periodic table, atoms tend to get smaller because _____________.
Back
the atoms have more protons.
6.
FLASHCARD QUESTION
Front
Define a mole in chemistry.
Back
A mole is a unit of measurement used to express amounts of a chemical substance, defined as exactly 6.022 x 10^23 particles.
7.
FLASHCARD QUESTION
Front
What is the significance of Avogadro's number?
Back
Avogadro's number (6.022 x 10^23) is the number of atoms, ions, or molecules in one mole of a substance.
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