Both of these lessons are classroom activities that require students to build models that display understanding of atoms and molecules. One lesson is structured while the other is guided.

How do you know if a chemical equation is balanced? What can you change to balance an equation? Play a game to test your ideas!

All living beings are made up of cells. Some of them are made up of only one cell and others have many cells. Also in: Dutch | French | Hungarian | Spanish

Students break apart cell phones to determine what elements are located in cell phones.  They then use the elements to determine how the flow of electrons works in the cell phone.  Lastly, create designs using legos to practice engineering practices that would be common in engineering.

Matching game, including matching common ionic charges and ions and the compounds they form and naming of greek prefixes for covalent molecules.

This activity provides a demonstration and lab exploration of one of the main "building blocks" of the periodic table of elements: chlorine. During the lab, students compare physical and chemical properties of chlorine compounds.

This is a lab activity where the students group the given elements as metals, nonmetals or metalloids.

How elements relate to atoms. The basics of how protons, electrons, and neutrons make up an atom. Created by Sal Khan.

Hands on Chemistry is a resource designed for use in traditional, online, and blended high school Chemistry classrooms. It was developed by Blue Ridge PBS in collaboration with Virtual Virginia. In this video, Chemistry teacher Fred Mitchell demonstrates the structure of atoms using simple models.

Keywords: shapes of atoms, electrons, elements, linear structure, sulfur dioxide, H2O, Hydrogen, Oxygen, lone pair, Ammonia, Nitrogen, Hydrogen, Sulfur Trioxide, trigonal planar, Methane, Carbon, tetrahedral, Phosphorous Pentachloride, trigonal bipyramidal

Meets VA SOL CH.3

This activity is a guided inquiry laboratory in which students perform reactions involving metals and hydrochloric acid in order to determine their activity series.

Are all atoms of an element the same? How can you tell one isotope from another? Use the sim to learn about isotopes and how abundance relates to the average atomic mass of an element.

This activity teaches students about the periodic table and how element properties can be predicted through periodic trends.

Proof: Any subspace basis has same number of elements. Created by Sal Khan.

In this physics activity, students will review and investigate stability of the nucleus of various elements. They will then determine factors that affect the stability of the nucleus.

Add different salts to water, then watch them dissolve and achieve a dynamic equilibrium with solid precipitate. Compare the number of ions in solution for highly soluble NaCl to other slightly soluble salts. Relate the charges on ions to the number of ions in the formula of a salt. Calculate Ksp values.

Add different salts to water, then watch them dissolve and achieve a dynamic equilibrium with solid precipitate. Compare the number of ions in solution for highly soluble NaCl to other slightly soluble salts. Relate the charges on ions to the number of ions in the formula of a salt. Calculate Ksp values. Arabic Language.

This activity is a summary/assessment assignment which allows for differentiation and student choice. Students are assessed in their knowledge of the atomic model and the arrangement of elements on the periodic table.

Students will classify elements as metals, non-metals and metalloids based on their observtions of appearance, conductivity, malleability and reactivity with dilute acid. They will observe the location of these groups on the periodic table.

In this activity, students will learn the concept of half-life of a radioactive material. Students will create and be able to recognize a graph representing the half-life of an imaginary radioactive element.

Students will fill in a blank periodic table for elements 1-20 using electron-dot models. As a visual tool students should see several periodic trends.