Percent Composition, Empirical & Molecular Formulas
Flashcard
•
Chemistry
•
10th - 11th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
Student preview

15 questions
Show all answers
1.
FLASHCARD QUESTION
Front
What is percent composition?
Back
Percent composition is the percentage by mass of each element in a compound, calculated by dividing the mass of each element by the total mass of the compound and multiplying by 100.
2.
FLASHCARD QUESTION
Front
How do you calculate the percent by mass of an element in a compound?
Back
Percent by mass = (mass of element in 1 mole of compound / molar mass of compound) x 100.
3.
FLASHCARD QUESTION
Front
What is the empirical formula?
Back
The empirical formula is the simplest whole-number ratio of atoms of each element in a compound.
4.
FLASHCARD QUESTION
Front
How do you determine the empirical formula from percent composition?
Back
Convert the percent composition to grams, then to moles, and find the simplest ratio of moles of each element.
5.
FLASHCARD QUESTION
Front
What is the molecular formula?
Back
The molecular formula shows the actual number of atoms of each element in a molecule of a compound.
6.
FLASHCARD QUESTION
Front
How do you find the molecular formula from the empirical formula?
Back
Multiply the subscripts in the empirical formula by a whole number (n) to match the molecular mass.
7.
FLASHCARD QUESTION
Front
What is the relationship between empirical and molecular formulas?
Back
The molecular formula is a multiple of the empirical formula, representing the actual number of atoms in a molecule.
Access all questions and much more by creating a free account
Create resources
Host any resource
Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever
or continue with

Microsoft
%20(1).png)
Apple
Others
Already have an account?
Similar Resources on Wayground
10 questions
Nervous System and Responses
Flashcard
•
10th Grade
10 questions
Disney descendants flashcard
Flashcard
•
KG
10 questions
Twelfth Night
Flashcard
•
10th Grade
11 questions
Unit 1 | Topic 2 | Key Terms - Flashcards
Flashcard
•
9th - 12th Grade
10 questions
Atoms and Molecules
Flashcard
•
9th Grade
15 questions
Parts of speech: general review
Flashcard
•
11th - 12th Grade
11 questions
Genetic Engineering Concepts
Flashcard
•
11th Grade - University
Popular Resources on Wayground
15 questions
Fractions on a Number Line
Quiz
•
3rd Grade
20 questions
Equivalent Fractions
Quiz
•
3rd Grade
25 questions
Multiplication Facts
Quiz
•
5th Grade
22 questions
fractions
Quiz
•
3rd Grade
20 questions
Main Idea and Details
Quiz
•
5th Grade
20 questions
Context Clues
Quiz
•
6th Grade
15 questions
Equivalent Fractions
Quiz
•
4th Grade
20 questions
Figurative Language Review
Quiz
•
6th Grade
Discover more resources for Chemistry
20 questions
Types of Chemical Reactions
Quiz
•
9th - 12th Grade
20 questions
Energy Transformations
Quiz
•
9th - 12th Grade
20 questions
Periodic Table & Trends
Quiz
•
10th Grade
17 questions
Reaction Rates
Quiz
•
11th Grade
20 questions
Periodic Trends
Quiz
•
10th Grade
24 questions
Identifying Types of Chemical Reactions
Quiz
•
10th - 12th Grade
20 questions
Naming & Writing Chemical Formulas
Quiz
•
10th Grade
20 questions
Atomic Structure
Quiz
•
10th - 12th Grade