Counting Atoms
Flashcard
•
Biology
•
8th Grade
•
Practice Problem
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
What is a subscript in a chemical formula?
Back
A subscript is a small number written below and to the right of an element symbol that indicates the number of atoms of that element in a molecule.
2.
FLASHCARD QUESTION
Front
How many atoms of Magnesium are in 10MgCl₂?
Back
10
3.
FLASHCARD QUESTION
Front
How many atoms of Oxygen are in H₂O?
Back
1
4.
FLASHCARD QUESTION
Front
What is the difference between an element and a compound?
Back
An element is a pure substance made of only one type of atom, while a compound is a substance formed when two or more different types of atoms bond together.
5.
FLASHCARD QUESTION
Front
How many atoms of Hydrogen are in 4H₂O?
Back
8
6.
FLASHCARD QUESTION
Front
What does the formula CaSO₄ represent?
Back
It represents a compound, specifically Calcium Sulfate.
7.
FLASHCARD QUESTION
Front
What does the coefficient in a chemical formula indicate?
Back
The coefficient indicates the number of molecules or formula units of a substance.
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