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Worksheet
Curated OER

Masses of Atoms

For Students 9th - 12th
In this masses of atoms activity, students complete a chart of 7 isotopes with their isotope symbol, atomic mass, atomic number, and the number of protons, neutrons and electrons. They calculate the average atomic mass of two elements.
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Worksheet
Curated OER

Average Atomic Mass

For Students 9th - 12th
In this average atomic mass worksheet, high schoolers read about how the protons and neutrons make up the atomic mass of an element. They find the average atomic mass given four problems.
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Worksheet
Curated OER

Molecules, Moles and Molar Masses

For Students 9th - 12th
In this molecules, moles and molar masses instructional activity, students find the atomic masses of 8 elements, they write the formulas for 6 diagrams of molecules and they find the molecular masses of 12 compounds. Students also find...
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Worksheet
Curated OER

Molecular Mass and Percent Composition

For Students 9th - 12th
In this molecular mass and percent composition instructional activity, students complete 5 sections where they determine atomic masses of given elements, they determine formula masses for given molecules, they find the molecular mass of...
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Lesson Plan
Curated OER

Teaching Atomic Structure Using Cooperative Learning

For Teachers 9th - 12th
Individuals in a group of four each take on a different role: atomic number expert, mass number expert, isotope expert, and nuclear atom expert. They teach each other about their area of expertise. As an assessment, a short quiz is...
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Worksheet
Curated OER

Charge and Mass Worksheet #1

For Students 9th - 12th
In this charge and mass instructional activity, students complete a table by indicating the atomic number, the number of protons, the number of neutrons, the number of electrons and the mass number in given elements and isotopes. They...
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Worksheet
Curated OER

Atomic Structure and Periodic Table Review

For Students 9th - 12th
In this atomic structure and periodic table worksheet, students complete a table with isotopes, their atomic masses, the number of protons, neutrons and electrons and mass number. They also find the average atomic mass of atoms and...
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Worksheet
Curated OER

Isotopes and Atomic Mass

For Students 10th - 12th
In this isotopes instructional activity, students calculate an average atomic mass of specific elements. This instructional activity has 4 problems to solve.
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Worksheet
Curated OER

The Atoms Family-Atomic Math Challenge

For Students 6th - 8th
In this atoms worksheet, learners determine the number of protons, neutrons, electrons, the atomic mass and the atomic number of 16 elements.
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PPT
Curated OER

The Mole

For Teachers 9th - 12th
This compact collection of slides explains the history and use of the mole unit. Relative atomic mass, as John Dalton understood it, is explained. Avogadro's number is also introduced. The mole, or the unit for the amount of a substance,...
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PPT
Curated OER

Atomic Theory

For Teachers 7th - 12th
An extremely thorough presentation walks new chemists through the basics of matter. There really isn't a unifying theme, however So many topics are covered: forces, elements, atomic structure, chemical properties, compounds, quarks,...
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Worksheet
Curated OER

Protons, Neutrons and Electrons Homework

For Students 5th - 12th
Perfect for reviewing atomic components, this worksheet simply consists of a large, easy-to-read chart of 11 elements. Chemistry learners fill in the missing element symbol, number of protons, neutrons, and electrons, the atomic mass and...
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Worksheet
Curated OER

The Number of Neutrons

For Students 9th - 12th
Although the focus of this worksheet is the neutron, you cannot talke about them without also dealing with protons and electrons! Chemistry kids fill in a table of 14 elements, identifying the mass, atomic number, isotopic symbol, and...
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Worksheet
Curated OER

Chapter 2 and 3 Practice Worksheet - Formulas and Compounds

For Students 9th - 12th
In this formulas and equations worksheet, chemistry apprentices write the chemical formulas given the names. They calculate percent composition, balance equations, and calculate the mass of a substance present in a fertilizer. This is a...
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PPT
Curated OER

Molar Mass

For Teachers 9th - 12th
Only three slides comprise this collection. The first defines molecular weight and molar mass. The second lists the molar mass and number of particles in a mole of several substances. The third is a chart depicting a chemical reaction...
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Worksheet
Curated OER

Formula Mass Calculations

For Students 10th - 12th
In this atoms worksheet, students calculate the formula mass for chemical compounds. This worksheet has 12 problems to solve.
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Worksheet
Curated OER

Formulas from Masses

For Students 10th - 12th
In this mass worksheet, learners determine the percentage composition of given compounds. Students write the empirical formula from the percentage composition. This worksheet has 5 problems to solve.
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Worksheet
Curated OER

Vocabulary - Atomic Structure

For Students 9th - 12th
In this atomic structure worksheet, students use textbooks and dictionaries to find the definitions of 22 terms associated with atomic structure.
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PPT
Science Geek

Atomic Structure

For Teachers 9th - 12th
The International Union of Pure and Applied Chemistry (IUPAC) was formed in 1919 and was crucial for allowing scientists to discuss findings during the Cold War. A presentation offers an introduction to atomic structure including the...
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Worksheet
Curated OER

Atomic Theory, Structure, and Symbols

For Students 10th - Higher Ed
In this atomic theory worksheet, students review the observations that led to the conclusion of the atom having a positively charged nucleus. Students compare atomic number and mass number and explain how the discovery of subatomic...
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Organizer
Curated OER

Atomic Structure

For Students 9th - 12th
In this elements worksheet, students complete a graphic organizer by filling in the element symbol, atomic number, atomic mass, and the number of protons, electrons, and neutrons. Then students complete 2 short answer questions.
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Lesson Plan
Curated OER

Understanding the Mole

For Teachers 9th - 12th
Young scholars develop an understanding of the mole and molar masses of elements. In this mole lesson plan, students use beans to find their relative masses and draw parallels to the atomic masses of elements. Young scholars work in...
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Worksheet
Curated OER

Atom Basics Review Sheet

For Students 10th - 12th
In this atom worksheet, students fill in three charts using the periodic table to identify atomic number, atomic mass, number of subatomic particles and the element's symbols. Students draw an atom and it's subatomic particles as well as...
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Lesson Plan
Curated OER

Chocolatium

For Teachers 9th - 12th
High schoolers find the average atomic mass of M & M's.  In this chemistry lesson, students are given a sample of the element chocolatium and the atomic mass of each sample.  They then find the average atomic mass.

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