Students examine the atomic structure of elements.  In this chemistry lesson students organize elements of the periodic table according to their atomic mass, and compare their order within the periodic table. 

Students study atoms and their protons and neutrons.  In this physical setting instructional activity students work together to complete a lab activity. 

In this atom worksheet, students read a paragraph about how atoms become positively and negatively charged. Students complete 6 short answer questions based on the reading.

Students define vocabulary related to the parts of the atom.  For this matter lesson, students navigate the web to find the structure and the forces that affect atoms.  Students complete an experiment with positive and...

In this chemistry worksheet, students answer short answer and true and false questions about acids, bases, atoms, elements, and more. Students complete 20 questions.

Students explain scientists' ideas about the structure of the atom over the last century. They develop a pictorial history of the changing ideas about the atom and write a caption describing the scientific thinking behind the model.

Eighth graders experiment with a Geiger counter and a dosimeter to test the amount of radiation in a room and the amount of radiation received in a day. In this radiation energy lesson plan, 8th graders test the shielding effect of...

In this atomic theory activity, 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...

In this periodic table worksheet, students use the list of coded letters and clues that correspond to the represented elements in the first four periods of the periodic table to complete the chart at the bottom of the sheet. They...

In this making atoms science activity, students read about the atomic number of protons, finding the number of neurons, and how electrons function before they complete the atom board graphic organizer and respond to 4 short answer...

In this chemistry science worksheet, students identify the parts of a chemical reactions. Students name the major particles of the atom. Students apply knowledge about the atom, theories, and models.

In this science crossword puzzle worksheet, learners determine the answers to 7 clues using vocabulary associated with atoms and matter. They fill in the puzzle both across and down.

Lewis dot diagrams, Lewis dot structures, and electron dot diagrams are all the same thing. Young scientists learn how to draw Lewis dot diagrams and come to understand how dots and dashes represent valence electrons and ionic or...

Here is a way for beginning chemists to review the skill of multiplying fractions! A segment of the periodic table of elements is presented at the top of the page, from which learners obtain the atomic number to use in six calcualtions....

Wow! Colorful and simple, these 160 slides introduce the various forms of energy, along with a relevant image. Some of the images are animations, which help beginning physical scientists to visualize the flow of electrons or energy! This...

Students examine the periodic table and how it was developed.  In this chemistry instructional activity students identify common properties and uses of elements within a family. 

Students use the Internet to research the history of the splitting of the atom. They use that research to prepare a presentation on an aspect of that topic. A map is generated to record findings and results.

In this atom worksheet, learners read about the structure of the atom including its subatomic particles and John Dalton's theory of the atom. Students also read about the differences between atoms, molecules and compounds. They answer 30...

In this science worksheet, students choose the multiple choice science term that best matches the 15 definitions stated. Students circle their answers.

In this atom learning exercise, 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...

In this atomic structure worksheet, students read a story with characters acting as the particles in an atom. They create a trading card for each particle, draw the structure of an atom and sing an atom song.

In this Bohr model worksheet, learners read about Neils Bohr and the model he proposed of the atom. Students answer nine questions about his theory that electrons travel in orbitals and give off energy when they are excited.

Students investigate temperature and chemical reactions. They explore the effect of temperature and particle size has on the rate of a simple chemical reaction. In addition, they graph their results and answer assessment questions.

For this history of the atom worksheet, students answer questions about Thomson's cathode ray apparatus, Rutherford's gold foil experiment and Dalton's beliefs about the atom. Students identify the number of protons, neutrons and...