Explore how changing the DNA sequence can change the amino acid sequence of a protein. Proteins are composed of long strings of amino acids. Proteins are coded for in the…
Compare the electron distribution, potential energy, and forces of two interacting hydrogen atoms (which can bond) with two helium atoms (which do not).
Explore the interactions that cause water and oil to separate from a mixture. Oil is a non-polar molecule, while water is a polar molecule. While all molecules are attracted to…
Change the charge on spheres to positive or negative and observe how charges affect the interaction between them.
How does an object’s speed change as it falls through the atmosphere? When first learning about how objects fall, usually just one force–îgravity–is considered. Such a simplification only accurately describes…
Explore the factors that affect a pendulum’s motion. A pendulum is a weight hung from a fixed point. Pendulums swing back and forth in a regular motion known as a…
Explore the motion of a pendulum suspended by a spring. A pendulum is a weight hung from a fixed point. Pendulums swing back and forth in a regular motion known…
How do scientists detect planets around distant stars? Use this model to explore how a star’s movement and light intensity are affected by an orbiting planet. Explore the effects of…
Explore what happens when a force is exerted on a polymeric plastic material. There are many different types of materials. Each material has a particular molecular structure, which is responsible…
Observe how molecules with hydrophilic and hydrophobic regions move in a mixture of oil and water, and the effects on potential energy.