Counting Atoms

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•
Chemistry
•
6th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is an atom?
Back
An atom is the smallest unit of matter that retains the properties of an element.
2.
FLASHCARD QUESTION
Front
What is a compound?
Back
A compound is a substance formed when two or more different elements are chemically bonded together.
3.
FLASHCARD QUESTION
Front
How do you determine the number of atoms in a chemical formula?
Back
Count the number of each type of atom indicated by the subscripts in the formula.
4.
FLASHCARD QUESTION
Front
What does the subscript in a chemical formula represent?
Back
The subscript indicates the number of atoms of the element that are present in the molecule.
5.
FLASHCARD QUESTION
Front
What is the significance of parentheses in chemical formulas?
Back
Parentheses indicate that the enclosed atoms are grouped together and can be multiplied by a coefficient outside the parentheses.
6.
FLASHCARD QUESTION
Front
How many total atoms are in the compound H₂O?
Back
There are 3 total atoms in H₂O (2 Hydrogen and 1 Oxygen).
7.
FLASHCARD QUESTION
Front
What is the total number of atoms in the compound C₆H₁₂O₆?
Back
There are 24 total atoms in C₆H₁₂O₆ (6 Carbon, 12 Hydrogen, and 6 Oxygen).
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