Counting Atoms

Flashcard
•
Chemistry
•
8th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the balanced equation for P4 + O2?
Back
1 P4 + 3 O2 -> 2 P2O3
2.
FLASHCARD QUESTION
Front
How many Hydrogen atoms are in 4H2O?
Back
8
3.
FLASHCARD QUESTION
Front
How many atoms of Hydrogen are in H2O?
Back
2
4.
FLASHCARD QUESTION
Front
What does it mean if there is no subscript following an element symbol?
Back
It means there is only 1 atom of that element.
5.
FLASHCARD QUESTION
Front
Is the equation Fe + S -> FeS balanced?
Back
YES!
6.
FLASHCARD QUESTION
Front
What is a subscript in a chemical formula?
Back
A number written below and to the right of an element symbol indicating the number of atoms of that element.
7.
FLASHCARD QUESTION
Front
How do you determine the number of atoms in a molecule?
Back
Count the subscripts for each element in the formula.
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