Atomic Weight

6th - 11th

In this chemistry worksheet, learners read about atoms, their charges, and their parts; protons and neutrons. They examine how to determine atomic weight by looking at an example. They work online as they practice finding the atomic weights of 8 elements and answer 4 comprehension questions.

Resource Details


Clay Atoms-Taming Our Fear Of The Invisible

Learners create atoms with clay by using different colors to represent the protons, neutrons and nucleus. In this creative lesson students use clay to learn about atoms and see how they apply to the periodic table.

What Are Atomic Weights?

This worksheet packet would be a useful supplement for a unit on atomic weights. It contains 8 pages of a total of 68 questions, including: deciphering diagrams, filling in charts,  multiple choice questions, and true or false statements. Students will enjoy learning about atomic weights with this dynamic packet.

Making Models of Atoms and Isotopes

In this models of atoms and isotopes worksheet, young scholars use marshmallow of different colors to represent the protons, neutrons and electrons in an atom. Students make models of the 3 isotopes of hydrogen. They draw a diagram of each and answer questions about isotopes.

What's Up with Atoms

Young scholars construct their own period table given a set of elements. In this chemistry lesson, students explain the relationship between the number of neutrons and the mass of an element. They apply what they have learned by playing a competitive team game.

History of Atomic Theory

Students study the significance of the quantum model and how scientific theories adapt over time.  In this investigative instructional activity students describe the contributions that scientists have helped develop the atomic theory and identify the locations of the atomic structure. 

History of the Atom

This is a tremendous overview of the tiny atom. Journey through the history of human understanding of this basic building block of matter. Examine each of the sub-atomic particles in detail: neutrons, protons, electrons, quarks. Peruse the periodic table of elements and discover electromagnetic forces. This is a classy and comprehensive compilation of chemistry slides that even includes a link to a 13-minute video. 

Atoms and Elements: An Introduction

High schoolers are able to discuss the difference between a proton, a neutron and an electron. They also can explain the difference between an ionic and a covalent bond. Students know the main structure of atoms and molecules. Student are able to: name different elements of the periodic table, make clay models of atoms and molecules, and define proton, neutron, and electron.

All About Circuits ~ Atomic Structure

In this interactive Internet  assignment, physical science investigators answer 11 questions about the atom, the subatomic particles, and atomic structure. They can click on "Reveal Answer" to discover if they are correct. They also calculate the number of moles in a sample of iron and express the atomic mass and mass number using an algebraic expression. Assign this as homework for reviewing atomic structure with upper elementary or middle school learners.

Elements, Atoms, and the Periodic Table

Through three separate exercises, chemistry explorers examine common atoms, the periodic table, and atomic structure. They identify the structural features of an atom, read the periodic table of elements, and calculate the atomic weight of an atom, given its atomic number. Plenty of background information is provided. The easiest way to use this resource would be to get learners online to read it and write their answers on a separate piece of paper to turn in.

Atomic Structure: The Heart of Matter

Students study the particles of which atoms are made. They define the electron, proton, and neutron and their attributes.

Be the first to comment

Join Lesson Planet Community, our free teacher discussion forum, to share ideas about this resource, and more.

Join the Conversation

Featured Testimonial

Chenuna M.
Lesson Planet is simply amazing. Saves time and energy. I have been able to adapt most of the resources and lesson plans to suit my own classroom situation.
Chenuna M.
Des Moines, Iowa