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Science Alive: Synthetic vs. Natural: What's the Difference?
Through this reading, students will learn that a substance's properties arise from its molecular structure, not from how it's made (i.e., synthesized by people or found in nature). There is no fundamental difference between natural and...
Bill Nye
Bill Nye: Hole Y Water
This tutorial from Bill Nye uses an experiment with water and sugar to show how matter is mostly empty space.
Next.cc
Next: Nano Technology
Learn about nanotechnology and why scientists are studying it by completing the three activities. Explore nanotechnology further by clicking on one of the numerous links provided.
Other
Classic Chemistry: Jean Perrin
An excerpt of Perrin's paper "Brownian Motion and Molecular Reality". Includes references.
Other
Science Alive: The Many Faces of Steroids
This reading is an introduction to the great variety of steroids and their many different uses.
Ministerio de Educacion, Cultura y Deporte (Spain)
Cnice: Iniciacion Interactiva a La Materia
Matter is anything that has mass and occupies a space. In this site you will find a lot of illustrations and interactive activities dealing with matter.
Utah STEM Foundation
Utah Stem Action Center: Smoke in a Bottle
Students will learn how complete and incomplete combustion is different and also how the products affect us.
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Reactions & Rates
Explore what makes a reaction happen by colliding atoms and molecules. Design experiments with different reactions, concentrations, and temperatures. When are reactions reversible? What affects the rate of a reaction?
State University of New York
State University of New York: Determining Electron Pair Geometry
The electron-pair geometry of a molecule or ion depends on the number of structurally significant electron pairs in the central atom. Here students are asked to count the number of lone electron pairs and bonded atoms on the central...
ClassFlow
Class Flow: What Is Matter?
[Free Registration/Login Required] Discover the composition of matter and the relationship between matter, atoms, and elements. Students will learn the differences between elements and compounds, and how molecules are formed. Chemical...
Ducksters
Ducksters: Chemistry for Kids: Chemical Bonding
Study chemical bonding in chemistry including atoms, valence electrons, ionic and covalent bonding, and how molecules are formed on this site!
Ducksters
Ducksters: Chemistry for Kids: Organic Chemistry
Kids learn about organic chemistry including the importance of carbon, organic molecules, compounds, hydrocarbons, synthesis, and functional groups.
Other
Chemsite: Pure Substances vs. Mixtures
An outline on the topics of pure substances and mixtures.
NASA
Nasa: The Space Place: Ions in Action
The page from NASA's The Space Place describes a simple activity, charging a balloon and making it move small pieces of paper. It then goes on to give an excellent explanation of how the activity works, and how it involves ions. This...
McREL International
Mc Rel: Whelmer #33 Learning Activity: Density Balloon
A simple activity that investigates the effect of heat on the volume of a gas. The activity is presented in lesson plan format that meets NSES standards.
Science Buddies
Science Buddies: Study Chirality With a Homemade Polarimeter
Some molecules can be either left- or right-"handed." The left- and right-handed molecules have the same number and type of atoms, and their chemical structures look identical, but they are actually mirror images of each other. Many...
American Chemical Society
Middle School Chemistry: What Is Density?
Calculate the density of cubes made of different materials to determine what type of material it contains. Using this information explain that the size, mass, and arrangement of the atoms or molecules of a substance determines its density.
OpenStax
Open Stax: Andrew R. Barron: Valence Shell Electron Pair Repulsion (Vsepr) Theory
Detailed explanation of Valence Shell Electron Pair Repulsion (VSEPR) Theory with examples and questions for the reader to check comprehension. Also includes step-by-step instructions for correctly building molecules using VSEPR Theory....
University of Colorado
University of Colorado: Ph Et Interactive Simulations: University of Colorado: States of Matter: Basics
An interactive simulation will heat, cool and compress atoms and molecules. Watch as they change between solid, liquid and gas phases. Recognize that different substances have different properties which will affect the temperatures for...
Concord Consortium
Concord Consortium: Stem Resources: Cellular Respiration
Web-based activity provides an opportunity for students to study cellular respiration in an up-close and personal way. By following atoms and molecules through an interactive animation, they will be able to see the changes that take...
Concord Consortium
Concord Consortium: How Can a Small Spark Start a Huge Explosion?
Students explore connections between electric forces and molecules using simulations, and explain energy transfers using conservation of energy. This concept will be explored in the following activities. Activity 1 What makes materials...
Chiral Publishing
Chiral Publishing: An Introduction to Chemistry: Molecular Compounds: Audio Book
Learn all about molecular structures in this easy-to-understand, audio book. See how valence electrons determine how atoms bond together, and look at the bonding inside some of the most common molecules around you.
Concord Consortium
Concord Consortium: Newton's Laws at the Atomic Scale
Explore how Newton's three laws apply to the world of atoms and molecules. Start with the originally contradictory observation of Brownian motion. Then, each law is addressed at the atomic level.
University Corporation for Atmospheric Research
Ucar: Whole Body Ozone Chemistry
In this activity, students will play the roles of various atoms and molecules to help them better understand how ozone is formed in the earth's stratosphere.
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