Counting Atoms
Flashcard
•
Science
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
How many Hydrogen atoms are in 3(NH₄)₂CrO₄?
Back
24
2.
FLASHCARD QUESTION
Front
Calculate the number of Oxygen atoms in Al(OH)₃.
Back
3
3.
FLASHCARD QUESTION
Front
What is a pure substance that cannot be broken down into simpler substances?
Back
Element
4.
FLASHCARD QUESTION
Front
If there is no subscript, how many atoms of that element are there?
Back
1
5.
FLASHCARD QUESTION
Front
How many Chlorine (Cl) atoms are on the right side of the equation?
Back
1
6.
FLASHCARD QUESTION
Front
What is the definition of an atom?
Back
The smallest unit of a chemical element, consisting of a nucleus surrounded by electrons.
7.
FLASHCARD QUESTION
Front
What is a molecule?
Back
A group of two or more atoms bonded together.
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