What is a chemical formula?
Chemical Formulas and Counting Atoms

Flashcard
•
Science
•
7th - 8th Grade
•
Hard
Quizizz Content
FREE Resource
Student preview

15 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Back
A chemical formula is a way of expressing the composition of a substance using symbols for its constituent elements and numbers to indicate the quantity of each element.
2.
FLASHCARD QUESTION
Front
What does a coefficient in a chemical formula represent?
Back
A coefficient represents the number of molecules or formula units of a substance in a chemical reaction.
3.
FLASHCARD QUESTION
Front
What is a subscript in a chemical formula?
Back
A subscript is a small number written to the right of a chemical symbol that indicates the number of atoms of that element in a molecule.
4.
FLASHCARD QUESTION
Front
How many atoms are in the formula H2O?
Back
There are 3 atoms in the formula H2O (2 hydrogen atoms and 1 oxygen atom).
5.
FLASHCARD QUESTION
Front
What does the formula CaO represent?
Back
The formula CaO represents calcium oxide, which consists of one calcium atom and one oxygen atom.
6.
FLASHCARD QUESTION
Front
How do you determine the total number of atoms in a chemical formula?
Back
To determine the total number of atoms, add the numbers indicated by the subscripts for each element in the formula.
7.
FLASHCARD QUESTION
Front
What is the difference between a coefficient and a subscript?
Back
A coefficient indicates the number of molecules, while a subscript indicates the number of atoms of an element in a molecule.
Create a free account and access millions of resources
Similar Resources on Quizizz
15 questions
Subscripts and Coefficients Practice 2022

Flashcard
•
7th Grade
15 questions
Counting Atoms

Flashcard
•
8th Grade
15 questions
Counting atoms

Flashcard
•
7th Grade
15 questions
Counting Atoms in Chemical Formulas

Flashcard
•
8th Grade
15 questions
Subscripts and Coefficients Practice 2024

Flashcard
•
7th Grade
13 questions
Counting Atoms: Law of Conservation of Mass

Flashcard
•
7th Grade
15 questions
Counting Elements and Atoms

Flashcard
•
8th Grade
15 questions
Chemical Formulas

Flashcard
•
7th - 8th Grade
Popular Resources on Quizizz
15 questions
Multiplication Facts

Quiz
•
4th Grade
25 questions
SS Combined Advisory Quiz

Quiz
•
6th - 8th Grade
40 questions
Week 4 Student In Class Practice Set

Quiz
•
9th - 12th Grade
40 questions
SOL: ILE DNA Tech, Gen, Evol 2025

Quiz
•
9th - 12th Grade
20 questions
NC Universities (R2H)

Quiz
•
9th - 12th Grade
15 questions
June Review Quiz

Quiz
•
Professional Development
20 questions
Congruent and Similar Triangles

Quiz
•
8th Grade
25 questions
Triangle Inequalities

Quiz
•
10th - 12th Grade