What is a chemical compound?
Counting Atoms Practice

Flashcard
•
Chemistry
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
A chemical compound is a substance formed when two or more elements are chemically bonded together.
2.
FLASHCARD QUESTION
Front
How do you determine the number of elements in a compound?
Back
Count the different types of elements present in the chemical formula.
3.
FLASHCARD QUESTION
Front
What does the subscript in a chemical formula indicate?
Back
The subscript indicates the number of atoms of the element in the compound.
4.
FLASHCARD QUESTION
Front
In the formula NaHCO3, how many different elements are present?
Back
4 (Sodium, Hydrogen, Carbon, and Oxygen).
5.
FLASHCARD QUESTION
Front
How many atoms of chlorine are in 4 NaCl?
Back
4 atoms of chlorine.
6.
FLASHCARD QUESTION
Front
What is the total number of atoms in 2 H2O?
Back
6 atoms (4 Hydrogen and 2 Oxygen).
7.
FLASHCARD QUESTION
Front
What does the coefficient in a chemical formula represent?
Back
The coefficient indicates the number of molecules or formula units of the compound.
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