Atomic Theory, Structure, and Symbols

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 particles and isotopes affected Dalton's atomic theory. This worksheet has 9 problems to solve.

Resource Details


What Do Atoms Look Like?

In this atomic structure learning exercise, learners answer eleven short answer questions about the structure of atoms including the number of protons, neutrons and electrons. Students indicate the differences in isotopes of atoms and what the atomic number and mass number represent.

Chapter 4 Worksheet-Part B Atomic Structure

In this atomic structure worksheet, students answer ten questions about the structure of atoms including their subatomic particles, what atomic number and mass number indicate, what isotopes are and what relative mass and relative charge mean.

Teaching Atomic Structure Using Cooperative Learning

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 provided. 

Distinguishing Between Atoms

Every type of question is used to query young chemists about atomic structure. A vocabulary list tops the page before fill in the blanks, true/false, and matching questions are listed. This is a neatly formatted and pertinent worksheet to assign as review.

Atomic Structure

In this atomic structure worksheet, high schoolers review concepts about the components of the atom through 9 short answer questions. Students fill in a table of elements with their subatomic particles, atomic number and mass number.

The Atom, Atomic Number, Mass Number, and Isotopes

Expose your chemistry learners to atomic theory. As they view this PowerPoint, they will learn about subatomic particles, atomic number, and mass number of atoms as well as how isotopes are structured. Throughout this neat and accurate presentation you will find learning-check slides that can be used to assess understanding.


In this elements worksheet, students determine the atomic number, mass, number, electrons, protons, and neutrons for elements. Students review the electromagnetic spectrum. This worksheet has 1 graphic organizer and 13 multiple choice questions.

Atomic Number and Mass

In this atomic number and mass quiz worksheet, students complete an on-line quiz, clicking on questions and matching answers, scoring 1 point for each correct answer. A printed version is available.

Understanding Oxidation Numbers

Students review atomic numbers, positive and negative charges, and the periodic table. They examine the relationships among protons and electrons, location of various elements, electron energy levels, and oxidation numbers.

Periodic Table

Students identify and label each of the elements in the periodic table with their names, atomic number and atomic masses, by playing a game of Jeopardy.

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