There are a number of social, emotional, and physiological reasons why teenagers start smoking, and why they continue smoking into adulthood. Help class members understand why smoking begins in youth—and how to protect themselves from...

Explore this animation to learn why water dissolves sugar.

See how temperature changes affect dissolving and the molecular bonds in a water molecule.

Explore heat, temperature, and the conduction of thermal energy through different materials.

This simulation allows students to make observations about how particle motion changes as the overall temperature of a liquid changes.

A key for classifying Texas native plants. Observe the characteristics of a plant and make choices as you work through the key to find out its binomial name.

Explore the properties of air, and what happens to air when heated and cooled.

Find out how density is defined for the study of chemistry.

Discover how water displacement can help scientists accurately measure volume.

Discover how the molecular make-up of water affects its density.

See how different solids can have different densities depending on their molecular make-up.

See how different liquids can have different densities depending on their molecular make-up.

Learn how the molecular movement in different temperature water affects the density of the liquid.

Explore the particles that make up atoms: protons, electrons, and electrons.

Get a quick overview of the Periodic Table of Elements basics.

Find out how energy level models are represented on the Periodic Table of Elements.

Discover how covalent molecular bonding affects the energy levels of electrons.

Explore ionic molecular bonds and how electrons and their energy levels come into play.

Explore the water molecule, and understand how it is a polar molecule.

Explore the chemical properties involved in surface tension.

Explore this animation to learn why water dissolves salt.

See how using the process of dissolving can be used to identify an unknown substance.

Investigate the difference between the solubility of salt and sugar in hot and cold water.

Find out if liquids can dissolve in water.