Chemical Formulas and Their Components Explained

Chemical Formulas and Their Components Explained

Assessment

Interactive Video

Chemistry, Science, Mathematics

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

This video tutorial introduces the basics of chemical formulas, explaining their symbolic representation and importance in conveying information about the types and quantities of atoms in compounds. It covers the parts of a chemical formula, including coefficients, element symbols, subscripts, and state symbols. The tutorial also provides practice problems to calculate the number of moles and atoms in a compound, using aspirin as an example, and demonstrates the application of Avogadro's number in these calculations.

Read more

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of a chemical formula?

To convey information about the types and quantities of atoms in a substance

To provide a visual representation of a molecule

To describe the physical state of a substance

To list the possible reactions of a substance

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What do coefficients in a chemical equation represent?

The relative number of molecules or moles of each substance

The physical state of a substance

The number of atoms in a molecule

The charge of ions in a compound

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of an element symbol?

2

H

Aq

H2O

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a subscript in a chemical formula indicate?

The charge of the molecule

The number of molecules

The physical state of the substance

The number of atoms of an element in a molecule

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the subscript '2' in H2O signify?

There are 2 molecules of water

There are 2 moles of water

There are 2 hydrogen atoms

There are 2 oxygen atoms

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of subscripts in a chemical formula?

To indicate the number of molecules

To show the ratio of atoms in a compound

To represent the physical state

To balance the chemical equation

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which state symbol represents a substance dissolved in water?

S

Aq

L

G

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?