Counting atoms
Flashcard
•
Science
•
7th Grade
•
Practice Problem
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
What is the total number of atoms in the compound H₂C₃O₄N₅?
Back
14
2.
FLASHCARD QUESTION
Front
How many Oxygen atoms are present in H₂O?
Back
1
3.
FLASHCARD QUESTION
Front
What is the coefficient in the chemical formula 3H₂O?
Back
3
4.
FLASHCARD QUESTION
Front
How many Nitrogen atoms are in the compound (NH₄)₂CrO₄?
Back
2
5.
FLASHCARD QUESTION
Front
How many different elements are present in the compound Mg₂As₃COHNi₂?
Back
6
6.
FLASHCARD QUESTION
Front
Define 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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